by Rajan Gupta | Aug 27, 2020 | Universe
The Sun is the medium sized star which was formed about 460 crore years ago by condensation of vast clouds of hydrogen gas. The Sun is the main source of energy for all the planets including our own planet earth. It is about 100 times wider than earth and its mass is...
by Rajan Gupta | Aug 27, 2020 | Universe
Our solar system is composed of sun, eight planets and their moons and a large number of minor planets such as asteroids, comets and meteors which revolve around the sun. In the solar system, the sun is present at the centre and all the eight planets keep revolving...
by Rajan Gupta | Aug 27, 2020 | Universe
Constellations are small groups of stars which appear in sky in specific shapes. There are about 88 constellations known to us. The names of these constellations have been derived from the names of animals or objects to which they appear to resemble. Some of the...
by Rajan Gupta | Aug 27, 2020 | Universe
In the universe, stars are not distributed evenly. Instead these stars clump together to form large clusters called galaxies. Thus, a galaxy is a large group of billions of stars. Galaxies also contain large clouds of hydrogen gas and dust particles. From these gas...
by Rajan Gupta | Aug 27, 2020 | Universe
The vast surrounding space around us which consists of solar system, stars, galaxies, gases and dust particles is called universe. Our universe was formed about fifteen billions years ago by an explosion called Big-Bang. There are approximately 100 billion (1011)...
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