Jupiter, Saturn and Uranus have rings around them. These are belts of small debris.
‘Sol’ in Roman mythology is the ‘sungod’. ‘Solar’ means ‘related to the sun’.
Aryabhatt was a famous astronomer of ancient India. He said that the moon and the planets shine due to reflected sunlight.
Light travels at the speed of about 3,00,000 km per second. The light of the sun takes about eight minutes to reach to the earth.
Neil Armstrong was the first man to step on the surface of the moon on 21 July 1969.
A human-made satellite is an artificial body. It is designed by scientists to gather information about the universe or for communication. INSAT, IRS, EDUSAT etc. are some of the Indian satellites.
Because of size and shape of Venus, which are very similar to the earth, it is considered as ‘Earth’s – twin’.
Till recently (August 2006), in a meeting of the ‘International Astronomical Union’, a decision was taken that Pluto like other celestial objects (ceres 2005 UB313) Discovered in recent past may be called ‘dwarf planets’.