Views of milky way

Views of milky way

The Milky Way is a spiral galaxy with a nucleus of old stars surrounded by halo of much younger stars. the name given to the galaxy is because of its appearance like bright,creamy band of stars stretching across the sky when seen from the Earth.

The Area Of Milky Way

The Area Of Milky Way

The diameter of the Milky Way is around 1,00,000 light years.It circles the whole sky which one can see wherever one is on the Earth. In the North, the constellations 

( groups of stars) it goes through include

 Auriga, Cassiopeia and Cygnus. Dark patches in the Milky Way are actually clouds of dust cutting out the light from the stars. The most famous one, 'the Coalsack', is in the Southern Cross.

Birth Of Stars

Birth Of Stars

Stars are born  and  may  shine  for  thousands  of  millions  of  years  before  they  die. A  cloud  of  gas  and dust  condenses  to form  a  young  star. Some  massive  stars,at the end  of  their  life,explode  as  supernovae  and  could  become  black  holes  or  neutron  stars. Smaller  stars  at  the  end  of  their  life,expand  into  red  giants and  then  shirnk   into  white  dwarfs  that  shine  dimly.

Galaxies

Our Sun and  all the stars you can see in the night sky belong  to a giant family of stars that we call our Galaxy. It contains around 100,000 million stars.This Galaxy is known as the Milky  Way. Beyond our own Galaxy, there are countless other galaxies scattered all across the  space.

Stars And Galaxies

Stduying Stars

By studying many stars,astronomers have found that they belong to different groups. Some are very hot and shine with bluish light, while others are much cooler and look reddish. These tints can be seen in many of the naked -eye stars that from the constellations. For example, the brightest star in the sky,Sirius,is much whiter and hotter than the Sun, while the closest known star after our Sun, Proxima Centauri, is small, dim and red, the Sun is a medium hot star.

About The Universe

The Universe refers to everything that exists,from the Earth to the most distant parts of space.The Universe comprises countless galaxies of stars.The farthest ones we can see are so distant that their light takes billions of years to reach us.

The earth Inner Part

The planets