dates of the 2024 solar and lunar eclipses

Dates of the 2024 eclipses

We tell you what the dates of the 2024 eclipses are and how they will be seen. Go here to learn more about astronomy.

What are the strangest exoplanets?

Strangest exoplanets

We tell you which are the strangest exoplanets that exist and their characteristics. Learn more here about the universe.

gaia space telescope

Gaia space telescope

We tell you what the latest feat of the Gaia Space Telescope has been and what the characteristics of this successful scientific advance are.

What is beyond the universe?

What is beyond the Universe

Do you want to know what lies beyond the observable Universe? We tell you what theories there are about it and much more.

space climate

Space weather

We explain in detail what space weather is and how it affects us. Enter here to learn more about the Universe.

when the sun will go out and it will be the end

When will the sun go out

Do you want to know when the sun will go out? Here we tell you everything you need to know about it. Enter to learn more.

what is the meaning of multiverse

Meaning of multiverse

Do you want to know all the theories about the meaning of the multiverse? Here we tell you everything that is known so far.

galaxies of the universe

observable universe

We tell you everything you need to know about the observable universe, its characteristics and components. Learn more about it here.

libra constellation

Libra Constellation

Do you want to know more about the Libra constellation? Here we explain everything you need to know so that you can get to know it better.

example of reflecting telescope

Reflecting telescope

We prepare a complete analysis of the reflecting telescope and its characteristics. Learn more about it here.

curiosities of mars

Curiosities of Mars

We tell you some of the curiosities about Mars that you probably didn't know. Learn more about the red planet here.

black moon effect

Black Moon: What is it?

We tell you what the black moon is, its characteristics and importance. Learn more about this magical phenomenon.

what happened to pluto planet

What happened to Pluto

We explain in detail what happened to Pluto and what were the reasons for stopping considering it as a planet in the solar system.

the great attractor

The Great Attractor

We tell you everything you need to know about what the Great Attractor is, its characteristics and importance. Learn more about it here.

betelgeuse star

Betelgeuse Star

We tell you everything you need to know about the star Betelgeuse and its characteristics. Learn more about her here.

parts of the milky way

Parts of the Milky Way

We explain in detail what the parts of the Milky Way are so that you can learn more about our galaxy.

Comets

types of meteors

We tell you what types of meteors exist, their characteristics, origin and much more. Enter to discover more.

galaxy m101

Galaxy M101

Do you want to know the importance that the galaxy M101 has for scientists? Here we tell you everything there is about her.

satellite moon curiosities

Curiosities of the Moon

Do you want to know some of the best curiosities of the Moon? Enter here because we will tell you the best secrets about it.

pulsars from the earth

What is a pulsar

We tell you in detail what a pulsar is, its characteristics and discovery. Go here to learn more.

solar storm and solar wind

Solar wind

We tell you everything you need to know about what the solar wind is, its origin and importance. Learn more here.

james webb

Hubble's successor

Do you want to know which is the successor to Hubble? Here we tell you all the characteristics and importance it has.

how was the moon created

how the moon was created

Do you want to know what hypotheses there are about how the Moon was created? Here we tell you everything in detail so you can learn more.

cold in a vacuum

temperature in space

We explain what the temperature is in space and how important it is to know it. Learn more about astronomy here.

curiosities of the perseids

Curiosities of the Perseids

We tell you some of the best curiosities about the Perseids that you may not have known and that you need to know.

cosmic radiation

cosmic radiation

We tell you everything you need to know about cosmic radiation, its characteristics, origin and much more.

types of moons

types of moons

We tell you what are the different types of moons that exist depending on the date, shape and size. Learn more here.

black hole in the milky way

Black hole in the Milky Way

Do you want to know all the advances on the discovery of a black hole in the Milky Way? Here we tell you in detail.

King Star

What color is the sun

Do you want to know what color the sun really is? Do you think it is yellow? Enter here to discover the whole truth.

large satellite ganymede

Ganymede Satellite

We tell you everything you need to know about the Ganymede satellite and its characteristics. Learn more about it here.

astronomy books

astronomy books

We tell you which are the best astronomy books to get you started in this exciting world. Do not miss it!

good astronomical binoculars

astronomical binoculars

We tell you everything you need to know about astronomical binoculars, their characteristics and what advantages they have.

What is it like to live on the red planet?

gravity on mars

Do you want to know in depth everything about gravity on Mars and the differences with Earth? Here we explain it to you in detail.

nutation movement of the earth

Nutation movement

Do you want to know what the nutation movement of the Earth consists of? Here we tell you everything you need to know.

everything you see in the messier

Messier Catalog

We tell you everything you need to know about the Messier catalogue, its history and importance. Learn more about astronomy here.

Bolidos in the Canary Islands

fireball in astronomy

We tell you everything you need to know about what a bolide is in astronomy and what its characteristics are. Learn more here.

astronomy and astrology

astronomy and astrology

Do you want to know the main differences between astronomy and astrology? Here we tell you more about it.

snake charmer

Ophiuchus constellation

We tell you everything you need to know about the Ophiuchus constellation and its symbol. Learn more about her here.

probes in space

Voyager probes

Do you want to learn more about the Voyager probes that are investigating our solar system? Here we teach you everything.

lagrange points

Lagrange points

Do you want to know what Lagrange points are and what are their characteristics? Here we tell you everything you need to know.

noise in space

Is there sound in space?

We answer the question of whether there is sound in space and everything you need to know about it. What are you waiting for?

light-year

Light-year

Do you want to know what a light year is and what it is for? Here we tell you everything you need to know about it.

space machine on mars

Curiosity Rover

Do you want to know more about the Curiosity rover and its discoveries on Mars? Here we tell you everything in detail.

planetesimals

planetesimals theory

Do you want to know how planets originate and form? Here we tell you everything you need to know about the theory of planetesimals.

Syrian star in the sky

Sirius Star

We tell you everything you need to know about the star Sirius and its characteristics. Learn more about her here.

The Apollo 11 module

Apollo 11 Lunar Module

We tell you everything you need to know about the lunar module of the Apollo 11 ship that managed to reach the Moon. Learn more here.

Chinese rover on the moon studying

Chinese rover on the moon

We tell you everything you need to know about the discoveries of the Chinese rover on the Moon. Learn more about it here.

all constellations

famous constellations

Do you want to know what are the famous constellations and their characteristics? Here we tell you everything so you can see them.

moon landing

Sea of ​​Tranquility

We tell you everything you need to know about what the Sea of ​​Tranquility is on the Moon and its importance.

arms of the milky way

Arms of the Milky Way

We explain step by step what the arms of the Milky Way are and their importance. Learn more about it here.

what color is pluto

What color is Pluto?

Do you want to know what color Pluto is and how they have been able to study it? Enter here because we tell you everything you need to know.

galaxies in space

cosmic dust

We tell you what cosmic dust is, its characteristics, origin and much more. Learn more about the Universe here.

stationary model

stationary universe theory

We tell you everything you need to know about the theory of the stationary universe, its characteristics and importance.

alternatives to the big bang

Inflation theory

Do you want to know more about the inflationary theory and the origin of the Universe? Here we tell you everything in detail.

surface of venus with rain

surface of Venus

Do you want to know all the information about the surface of Venus? Here we tell you everything you need to know.

How is the sun composed?

How is the Sun made up?

We explain in detail how the Sun is made up, its characteristics and the importance it has for life.

star colors

What color are the stars

Do you want to know what color the stars are and what it affects? Enter here because we tell you everything in detail.

super giant stars

stars bigger than the sun

Did you know that there are many stars larger than the Sun in the Universe? Here we tell you everything you need to know.

planet formation

How planets are formed

Do you want to know how planets are formed? Enter here because we explain everything in detail.

Charon satellite

Charon

Do you want to know the formation, discovery and characteristics of Charon? Here we tell you everything about it.

possible habitable planet

Kepler 1649c

Science has discovered an exoplanet that could be habitable. His name is Kepler 1649c. Enter here to learn more.

orion nebula

Horsehead Nebula

We tell you everything you need to know about the Horsehead Nebula and its characteristics. Learn more here.

moon covering the sun

types of eclipses

We tell you everything you need to know about the different types of eclipses that exist. Learn more about it here.

cannibal universe

Magellanic Cloud

We tell you everything you need to know about the Magellanic Cloud and its characteristics. Learn more about it here.

sombrero galaxy

Sombrero Galaxy

We tell you everything you need to know about the Sombrero galaxy and its characteristics. Learn more about it here.

what are the rotational movements of the moon

Rotational movements of the Moon

We tell you everything you need to know about the rotational movements of the Moon and its characteristics. Learn more about it here.

exoplanet kepler 442b

kepler 442b

Have you ever been told about a planet that could be habitable? That is the exoplanet Kepler 442b. Find out all about him here.

mars planet

why is mars red

Do you want to know why Mars is red? Enter this article because you can find all the information you need to know.

cancer contellation

Cancer Constellation

Do you want to know everything about the constellation Cancer? Here we tell you its characteristics, origin and curiosities.

supermassive black holes

supermassive black holes

Do you want to know what supermassive black holes are? Here we tell you everything you need to know about them.

types of telescopes

types of telescopes

Do you want to know what are the characteristics and uses of the different types of telescopes that exist? Here we tell you everything.

characteristics of the geostationary satellite

geostationary satellite

We tell you in detail what are the characteristics, location and orbit of a geostationary satellite. Know its importance here.

what is astronomy

what is astronomy

Do you want to know what astronomy is and what it studies? Here we tell you everything you need to know about it.

crab nebula

Crab Nebula

Enter here to learn more about the Crab Nebula, its origin, discovery and how to observe it.

orion nebula

Orion Nebula

We tell you everything you need to know about the Orion Nebula and its characteristics. Enter here to find out more.

when the sun formed

When was the Sun formed?

Do you want to learn when the Sun was formed and what are its characteristics? Here we explain everything in detail.

asteroid in the universe

What are asteroids

We tell you what asteroids are, their characteristics, origin and types. Do you want to know more about the universe? Enter here.

color of the universe

Color of the Universe

Do you want to know what the true color of the Universe is? Here we tell you everything you need to know about it.

how was the universe created

How the Universe was created

Do you want to know how the Universe was created and what are the most worthwhile theories? Here we tell you everything.

characteristics of the total solar eclipse

Total solar eclipse

We tell you everything you need to know about the total solar eclipse and what its characteristics are. Learn more about it here.

curiosities of the solar system

Curiosities of the Solar System

The Universe is full of mysteries that the human being has always wanted to know. Enter here to know the curiosities of the Solar System

how do stars form in the universe

How do stars form

We tell you how the stars of the universe are formed and what characteristics they have. Learn more about astronomy here.

m16

Eagle Nebula

Do you want to know more about astronomy and the universe? Here we tell you what the Eagle Nebula is and how to see it.

kite direction

what is a comet

We tell you everything you need to know about what a comet is, its characteristics and origin. Learn more about astronomy here.

why is pluto not a planet

Why is Pluto not a planet?

Do you want to know why Pluto is not a planet? Here we tell you all the reasons and their characteristics. Learn more about astronomy.

stars in the sky

what is a star

We tell you everything you need to learn what a star is and what its characteristics are. Know thoroughly about it.

What is the personal telescope for?

What is the telescope for?

We explain in detail what the telescope is for, what its functionalities are and how important it is. Learn more here.

planet formation

Planetary system

Learn more about the universe and the planetary system. We explain its characteristics and its formation. Learn more about it here.

what does a black hole sound like

How does a black hole sound?

We tell you in detail what a black hole sounds like and how NASA discovered it. Learn more about our universe here.

Alfa Centauri

Alfa Centauri

We tell you everything you need to know about Alpha Centauri and its characteristics. We tell you more about our universe.

what is an orbit

what is an orbit

We tell you in detail what an orbit is and what its characteristics are. Learn more about the universe around us.

solar system

what is a planet

In this article we tell you what a planet is, what its characteristics, types and classification are. Learn more here.

ways to see the sky

how a telescope works

Learn how a telescope works to be able to observe the sky and know the best constellations. Learn more here.

earth rotation movement

earth rotation

We tell you in detail everything you need to know about the Earth's rotation. Learn more about its importance.

arcturus

Arcturus

Know in depth everything about the star Arcturus, the brightest in the whole celestial north. Here we explain everything to you. Do not miss it!

solar storm characteristics

Solar storms

In this article we tell you everything you need to know about solar storms and their characteristics. Learn more here.

kuiper belt

Kuiper Belt

We tell you everything you need to know about the Kuiper belt and what its characteristics are. Learn more about it here.

Tycho Brahe

Tycho Brahe

We tell you in detail all the biography and feats of Tycho Brahe as an astronomer. Learn more about its importance here.

explore the universe

Space rockets

In this article we tell you everything you need to know about space rockets and their characteristics. Learn more here.

neutron star

Neutron star

In this article we tell you everything you need to know about the neutron star, what it is and what its characteristics are.

Orion's belt

Orion's belt

In this article we will tell you in depth everything you need to know about the Orion belt and its characteristics. Learn more about it here.

phases of an eclipse

What is a lunar eclipse

In this article we tell you what a lunar eclipse is, its characteristics, stages, origin and some history. Learn more about it here.

types of meteorites

What is a meteorite

In this article we tell you everything you need to know about what a meteorite is, its characteristics, formation and types.

month

What is a satellite

In this article we tell you everything you need to know about what a satellite is and what types exist.

accumulation of stars

Andromeda Galaxy

We tell you everything you need to know about the Andromeda galaxy and its characteristics. Learn more about it here.

osa minor and osa major

Little Bear

In this article we will tell you all the characteristics, importance and mythology of the Ursa Minor constellation. Learn more here.

how a black hole is formed

How a black hole is formed

In this article we will tell you in detail how a black hole is formed and what its characteristics are. Learn more about it here.

heliocentrism

Heliocentrism

In this article we tell you everything you need to know about heliocentrism and its characteristics. Learn more about it here.

what is the universe

What is the universe

In this article we tell you everything you need to know about what the universe is and its characteristics. Know all the secrets here.

Saturn's rings

Saturn's rings

In this article we tell you everything you need to know about the rings of Saturn, their characteristics and discoveries.

how to choose a telescope

How to choose a telescope

We give you the best tips on how to choose a telescope according to budget, features and experience. Learn more here.

asteroid belt

Asteroid belt

We tell you everything you need to know about the asteroid belt and its characteristics. Learn more about the solar system here.

star clusters

What is a galaxy

In this article we tell you what a galaxy is and what are the characteristics and types that exist. Learn more about the universe here.

Cassini probe

Cassini probe

In this article we tell you everything you need to know about the Cassini probe and its discoveries. Learn more about it here.

helicopter to travel to mars

Ingenuity Mars

We tell you everything you need to know about Ingenuity Mars and its characteristics. Learn more about exploring Mars here.

what is the sun

What is the sun

In this article we tell you everything you need to know about what the sun is and what its characteristics are. Learn more about it here.

geminidas and their characteristics

Geminids

We tell you everything you need to know about the Geminids and their characteristics. Learn more about it here.

constellation gemini

Constellation gemini

We tell you everything you need to know about the constellation of Gemini and its characteristics. Learn more about it here.

bright star in the night sky

Star Vega

We tell you in depth everything you need to know about the Vega star and its characteristics. Learn more about it here.

Virgo major stars

Virgo constellation

In this article we teach you everything you need to know about the Virgo constellation and its characteristics. Learn more about it here.

Constellation leo

We tell you everything you need to know about the constellation Leo and its characteristics. Learn more about the stars in the sky here.

comet Neowise

Comet Neowise

In this article we will tell you everything about Comet Neowise. Learn more about it here.

constellation scorpio

Scorpio constellation

We tell you everything you need to know about the constellation of Scorpio and its characteristics. Learn more about it here.

Shooting Star

Shooting Star

In this article we tell you everything you need to know about the shooting star, its origin and characteristics. Learn more about it here.

constellation pleiades

Pleiades

We tell you everything you need to know about the constellation of Pleiades and its characteristics. Learn more about it here.

hertzsprung-russell diagram

Hertzsprung-Russell diagram

We tell you everything you need to know to interpret the Hertzsprung-Russell diagram. Learn more about the stars here.

star growth

Neutron stars

We tell you everything you need to know about neutron stars. Learn more about it here.

accretion

What is accretion

We tell you everything you need to know about accretion and its importance in the formation of stars. Learn about it here.

rocky planets of the solar system

Rocky planets

We tell you all the characteristics and classification of the rocky planets. Learn all about it here.

black hole

Event horizon

We tell you everything you need to know about the event horizon and its importance in the discovery of black holes.

White dwarf

White dwarf

We tell you everything you need to know about the white dwarf, its characteristics and formation. Learn more about it here

gas giants

Gaseous planets

We tell you everything you need to know about the gaseous planets and their characteristics. Learn more about it here.

gravitational waves

Gravitational waves

We tell you everything you need to know about gravitational waves, their characteristics and importance. Know everything here.

double stars

Double stars

We tell you everything you need to know about double stars and their characteristics. Learn more about astronomy.

types of stars and characteristics

Types of stars

In this article we will tell you all the characteristics and classification of the different types of stars that exist.

spiral galaxy features

Spiral galaxy

In this article we tell you everything you need to know about the spiral galaxy and its characteristics. Learn more about it here.

brown dwarf

Brown dwarf

We tell you the characteristics, formation and curiosities of the brown dwarf. Learn more about this celestial object.

natural satellites

Jupiter satellites

We tell you everything you need to know about the satellites of Jupiter and their characteristics. Learn more about it here.

nasa and astronauts

NASA

We tell you everything you need to know about NASA and the best space missions in history. Learn all about it here.

transit of venus

Transit of Venus

We tell you everything about the transit of Venus and how you should see it. Learn more about this astronomical phenomenon.

space race

Space race

We tell you step by step everything you need to know about the space race and the advances of the human being.

exoplanets

Exoplanets

We tell you in detail what exoplanets are and what their main characteristics are. Learn the method to discover them.

satellites of venus

Satellites of Venus

In this article we tell you some theories about the satellites of Venus and if you have ever been able to have. Meet the mystery here.

stars in the sky

What are the stars

In this article we tell you in detail what stars are and how they are formed. Learn more about the universe here.

perseids in august

Perseids

In this article we tell you everything you need to know about the Perseids and their origin. Learn more about the Meteor Shower.

irregular galaxies

Irregular galaxies

In this article we tell you everything you need to know about irregular galaxies and their formation. Learn more about it here.

saturn and rings

Planets with rings

In this article we will tell you all the characteristics and composition of the planets with rings. Learn more about it here.

how to use a celestial planisphere

Celestial planisphere

In this article we tell you what a celestial planisphere is, how it is used and how one is made. Learn about observing the sky.

andromeda constellation

Andromeda constellation

We tell you in great detail everything you need to know about the Andromeda constellation. Learn more about the set of stars in the sky.

types of galaxies

Types of galaxies

We tell you all the characteristics and the classification of the different types of galaxies that exist. Learn more about the universe here.

Order of the planets

In this article we tell you everything you need to know about the order of the planets and the characteristics of the solar system.

sun and stars

Sun characteristics

In this article we tell you all the characteristics of the sun, as well as its layers, origin and components. Learn more about it here

aries constellation

Constellation Aries

We tell you everything about the constellation of Aries in the sky. Learn more about the mythology and origin of this grouping of stars.

Aquarius constellation

Aquarius constellation

In this article we will tell you all the characteristics, origin and mythology of the constellation Aquarius. Learn more about it here.

Artificial satellites

We tell you all the characteristics, importance and uses that are given to artificial satellites. Learn more about it here.

natural satellites the moon

Natural satellites

In this post we tell you everything you need to know about natural satellites and their main characteristics. Learn more here.

vision of outer planets

Outer planets

We tell you what the outer planets are and their main characteristics. Learn more about the entire solar system.

Inner planets

In this post we show you what the inner planets are and their main characteristics. Learn more about it here.

solar storm characteristics

Solar storm

In this article we tell you what a solar storm is and how it can affect the Earth. Learn all about these phenomena here.

Circumpolar constellations

In this post we will tell you all the characteristics and how to recognize the circumpolar constellations. Learn more about astronomy here.

How to recognize the constellation Pisces

Constellation pisces

In this article we will teach you everything you need to know about the constellation Pisces. Learn more how to search for it in the sky.

Sagittarius constellation

Sagittarius constellation

We tell you everything you need to know about the constellation Sagittarius. Learn here all the characteristics and mythology of this group of stars

Sun temperature and its brightness

Sun temperature

In this article we explain what the temperature of the Sun is and how it is calculated. Learn more about the star that dominates our solar system.

Face facing the Moon

Craters on the Moon

In this post we explain in detail how craters were formed on the Moon and what characteristics the lunar surface has.

Taurus constellation

Taurus constellation

In this post you can find complete information about the constellation of Taurus. Learn to identify it and its meanings.

Heritage

Skywatcher telescopes

We make a selection of the best Skywatcher telescopes and a comparison so that you can choose the one that best suits you.

Distance from Earth and moon

We teach you the mystery of the distance from the Earth to the moon. Learn to interpret the true distance between these two celestial bodies.

Tiny planets

Tiny planets

We teach you what the dwarf planets of our solar system are. Learn what are the features they have here.

Anaximander

Biography of Anaximander

In this article you will find the biography and most important feats of the philosopher and astronomer Anaximander. Do not miss it!

Where is the Roche limit

Roche limit

Learn what the Roche limit is and its importance in astronomy. In this article we will tell you everything in detail.

The galaxy we live in is called the Milky Way.  Surely you already knew that.  But how much do you know about this galaxy we live in?  There are millions of characteristics, curiosities and corners that make the Milky Way a special galaxy.  It is our heavenly home after all, since it is where the Solar System and all the planets we know are located.  The galaxy we live in is packed with stars, supernovae, nebulae, energy, and dark matter.  However, there are many things that still remain a mystery to scientists.  We are going to tell you many things about the Milky Way, from its characteristics to curiosities and mysteries.  Profile of the Milky Way This is the galaxy that forms our home in the universe.  Its morphology is quite typical of a spiral with 4 main arms on its disk.  It is made up of billions of stars of all types and sizes.  One of those stars is the Sun.  It is thanks to the Sun that we exist and life has been formed as we know it.  The center of the galaxy is at a distance of 26.000 light years from our planet.  It is not known for sure if there could be more, but it is known that at least one supermassive hole is in the center of the Milky Way.  The black hole becomes the center of our galaxy and has been named Sagittarius A.  Our galaxy began to form about 13.000 million years ago and is part of a group of 50 galaxies known as the Local Group.  Our neighboring galaxy, called Andromeda, is also part of this group of smaller galaxies, which also includes the Magellanic Clouds.  It is still a classification made by the human being.  A species that, if you analyze the context of the entire universe and its extension, is nothing.  The Local Group mentioned above is itself part of a vastly larger gathering of galaxies.  It is called the Virgo supercluster.  The name of our galaxy is named after the luminous band that we can see of stars and gas clouds that extend above our sky through the Earth.  Although the Earth is inside the Milky Way, we cannot have as complete an understanding of the nature of the galaxy as some outer star systems can.  Much of the galaxy is hidden by a thick layer of interstellar dust.  This dust does not allow optical telescopes to focus well and discover what is there.  We can determine the structure by using telescopes with radio waves or infrared.  However, we cannot know with complete certainty what is in the region where interstellar dust is found.  We can only detect the forms of radiation that are penetrating dark matter.  Main characteristics We are going to analyze a little the main characteristics of the Milky Way.  The first thing we will analyze is the dimension.  It is shaped like a barred spiral and has a diameter of 100.000-180.000 light years.  As mentioned before, the distance to the center of the galaxy is approximately 26.000 light years.  This distance is something that human beings will never be able to travel with the life expectancy and technology that we have today.  The age of formation is estimated at 13.600 billion years, about 400 million years after the Big Bang (link).  The number of stars that this galaxy has is difficult to count.  We cannot go one by one counting all the stars there are, since it is not very useful to know exactly.  There are an estimated 400.000 billion stars in the Milky Way alone.  One of the curiosities that this galaxy has is that it is almost flat.  People who argue that the Earth is flat will be proud that this is so too.  And it is that the galaxy is 100.000 light years wide but only 1.000 light years thick.  It is as if it were a flattened and twisted disk where the planets are embedded in curved arms of gas and dust.  Something like that is the solar system, a group of planets and dust with the Sun at the center anchored 26.000 light-years from the turbulent center of the galaxy.  Who discovered the Milky Way?  It is difficult to know for sure who has discovered the Milky Way.  It is known that Galileo Galilei (link) was the first to recognize the existence of a band of light in our galaxy as individual stars in the year 1610.  This was the first real test that began when the astronomer pointed his first telescope at the sky and could see that our galaxy is made up of innumerable stars.  As early as 1920, Edwin Hubble (link) was the one who provided enough evidence to know that the spiral nebulae in the sky were actually entire galaxies.  This fact greatly helped to understand the true nature and shape of the Milky Way.  This also helped to discover the true size and to know the scale of the universe in which we are immersed.  We are also not entirely sure how many stars the Milky Way has, but it is also not very interesting to know.  Counting them is an impossible task.  Astronomers try to find the best way to do it.  However, telescopes can only see one star brighter than others.  Many of the stars are hidden behind the clouds of gas and dust that we mentioned earlier.  One of the techniques they use to estimate the number of stars is to observe how fast the stars are orbiting within the galaxy.  This somewhat indicates the gravitational pull and mass.  Dividing the mass of the galaxy by the average size of a star, we will have the answer.

Milky Way

We tell you all the most curious about the Milky Way, our galaxy. Enter here to learn more about the universe where we live.

One of the layers of the atmosphere that protects us is the ionosphere.  It is a region that contains a large number of atoms and molecules that are charged with electricity.  These charged particles are created thanks to radiation that comes from outer space, mainly from our star the Sun.  This radiation hits the neutral atoms and air molecules in the atmosphere and ends up charging them with electricity.  The ionosphere is of great importance for humans and, therefore, we are going to dedicate this entire post to it.  We are going to explain everything you need to know about the characteristics, operation and importance of the ionosphere.  Main Features While the Sun is shining continuously, during its activity it is generating a large amount of electromagnetic radiation.  This radiation falls on the layers of our planet, charging the atoms and molecules with electricity.  Once all the particles are charged, a layer forms that we call the ionosphere.  This layer is located between the mesosphere, the thermosphere and the exosphere.  More or less you can see that it begins at a height of about 50 km above the earth's surface.  Although it starts at this point, where it becomes more complete and important is above 80 km.  In the regions that we are in the upper parts of the ionosphere we can see hundreds of kilometers above the surface that extend tens of thousands of kilometers into space is what we call the magnetosphere.  The magnetosphere is the layer of the atmosphere that we call this way because of its behavior due to the Earth's magnetic field (bond) and the action of the Sun on it.  The ionosphere and the magnetosphere are related by the charges of the particles.  One has electrical charges and the other has magnetic charges.  Layers of the ionosphere As we have mentioned before, although the ionosphere begins at 50 km, it has different layers depending on the concentration and composition of the ions that form it.  Previously, the ionosphere was thought to be made up of several different layers that were identified by the letters D, E, and F.  The F layer was divided into two more detailed regions which were F1 and F2.  Today, more knowledge is available of the ionosphere thanks to the development of technology and it is known that these layers are not very different.  However, in order not to make people dizzy, the original scheme that was had in the beginning is maintained.  We are going to analyze part by part the different layers of the ionosphere to see in detail their composition and importance.  Region D This is the lowest part of the entire ionosphere.  It reaches altitudes of between 70 and 90 km.  Region D has different characteristics than regions E and F.  This is because its free electrons almost completely disappear overnight.  They tend to disappear as they combine with oxygen ions to form oxygen molecules that are electrically neutral.  Region E This is the layer also known as Kennekky-Heaviside.  This name has been given in honor of the American engineer Arthur E.  Kennelly and the English physicist Oliver Heaviside.  This layer extends more or less from 90 km, where layer D ends up to 160 km.  It has a clear difference with the D region and is that the ionization remains throughout the night.  It should be mentioned that it is also quite reduced.  Region F It has an approximate altitude from 160 km to the end.  It is the part that has the highest concentration of free electrons since it is the closest to the sun.  Therefore, it perceives more radiation.  Its degree of ionization does not have many changes during the night, since there is a change in the distribution of the ions.  During the day we can see two layers: a smaller layer that is known as F1 that is higher up and, another highly ionized dominant layer that is known as F2.  During the night both are fused at the level of the F2 layer, which is known as Appleton.  Role and importance of the ionosphere For many, having a layer of the atmosphere that is electrically charged may not mean anything.  However, the ionosphere is of great importance for the development of humanity.  For example, thanks to this layer we can propagate radio waves to different places on the planet.  We can also send the signals between the satellites and the Earth.  One of the most important factors why the ionosphere is fundamental for humans is because it protects us from dangerous radiation from outer space.  Thanks to the ionosphere we can see beautiful natural phenomena such as the Northern Lights (link).  It also protects our planet from the celestial rock masses that enter the atmosphere.  The thermosphere helps us protect ourselves and regulate the Earth's temperature by absorbing some of the UV radiation and X-rays that are emitted by the Sun.  On the other hand, the exosphere is the first line of defense between the planet and the sun's rays.  The temperatures in this much-needed layer are extremely high.  At some points we can find 1.500 degrees Celsius.  At this temperature, apart from the fact that it is impossible to live, it would burn every human element that passed by.  This is what causes a large part of the meteorites that hit our planet to disintegrate and form shooting stars.  And it is that when these rocks come into contact with the ionosphere and the high temperature at which it is found in some points, we find the object becomes somewhat incandescent and surrounded by fire until it ends up disintegrating.  It really is a very necessary layer for human life to develop as we know it today.  For this reason, it is important to know her more thoroughly and study her behavior, since we could not live without her.

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