Tagged: Light year

March 9, 2020

Stars, Galaxies, Solar system, Planets, Moons, Asteroids, Meteors, Meteorites & Comets

Planets revolve around the Sun in fixed orbits due to the attraction force of the Sun to the planets. Mercury, Venus, Earth and Mars are called the inner planets because they are the nearest...

Earth and Universe

September 4, 2015

Milky Way Galaxy, Universe Expansion & measuring distances through the universe

The universe is a wide and extended space that contains all the galaxies, the stars, the planets, the moons, the living organisms, and everything, The universe is very vast, The Sun and the earth...