What is the difference between a star, satellite and a planet?
Mars has a thin atmosphere composed mainly of what gas?
How big is the universe?
How many earths can fit into jupiter s great red spot?
Who stated that planets are originated from the collision of the sun and comet?
Which star does not change its position in the sky?
How have some stars had time to die since the universe began?
Explain how is saturn like earth?
The hydrogen envelope that surrounds the comets nucleus derives its hydrogen most directly from?
Which is the brighest star?
Tell me how long is a day on saturn?
The first man who walked on the moon?
How is venus different to earth?
How many moons do Jupiter planet have?
All of saturns moons are composed predominantly of what substance?