Planet Facts

Jupiter is the largest planet in the solar system- 1400 times the size of Earth.

Mercury is the planet nearest to the Sun. It has the shortest orbit. To complete an orbit around the sun it takes 88 Earth days.

Saturn is surrounded by many ringsand spins at high speed on its axis; a day on Saturn would last only 10 hours. Saturn also has the most satellites, 18 in all.

Pluto is a dwarf planet in the Kuiper belt, a ring of bodies beyond Neptune. It was the first Kuiper belt object to be discovered. Pluto takes more than 248 years to complete on orbit around the Sun.

Venus is the planet which sines brightest. This is because it is surrounded by clouds, which reflect the light of the Sun. Venus is very hot 480°C on its surface.

Mars at around 225 million kilometers from the Sun appears red, because of the oxydization of the metal which covers it.

Uranus has its axis on which it rotates almost paallel to the path of its orbit around the Sun. It has 15 satellites.

Earth moves around the Sun at a speed of 29.8 kilometers per second. However, it is the only planet where there is water and where life has developed.

Neptune is distinguished by a bright blue colour. Its orbit around the Sun last more than 164 Earth years. Neptune's atmosphere is made up of hydrogen, helium and methane. The methane in Neptune's upper atmosphere absorbs the red light from the sun but reflects the blue light from the Sun back into space.

Sun is the star at the center of the Solar System and is by far the most important source of energy for life on Earth. From Earth, we can only see the photosphere of the Sun. The Sun rotates on its own without a regular speed.

What How Why

What is a Light Year?

The unit of measurement used to calculate distances in space is called Light Year. It is the distance which light travels in one year. 1 Light-Year = 9460 billion km. (approx)