Describe how are clouds formed?
Why these stars are called novae?
Which is the first unmanned space vehicle which landed on the moon?
Which is the landing craft used by armstrong on the moon?
In which year was western astronomy included in the indian curriculum?
Do black holes really exist?
Tell me how many moons do mars have?
How old is our earth?
What is the part of the sun that we can see without any instruments?
Who stated that planets are originated from the collision of the sun and comet?
When a superior planet is at quadrature in reference to the earth, what is its elongation in degrees?
How do clouds form?
Who is the known as the father of indian astronomy?
Tell me how many planets are now in the solar system?
Which is the star nearest to earth?