Explain how big is the universe?
In the doppler effect, what is the correct term for the change in the color of light when an object that is emitting light is moving toward the observer?
Explain how far from earth, is the moon?
The kappa cygnids and the northern delta aquarids are names for what phenomena?
What is the thinnest layer of the suns atmosphere?
Which is the first unmanned space vehicle which landed on the moon?
How many half- moons are there in a lunar cycle?
What are asteroids like?
Does astronomy help you with other things in life? If yes, what?
What are the super giant novae stars?
How is venus different to earth?
What is the density of stars?
Is the moon escaping the earth?
The hydrogen envelope that surrounds the comets nucleus derives its hydrogen most directly from?
Tell me how many stars are there in the whole universe?