Explain how did the moon form?
How many moons does neptune have?
Which was the first space rocket to hit the moon?
What are asteroids like?
Sam langley invented what instrument, which allows astronomers to measure the energy output of the sun and other stars?
Which is the landing craft used by armstrong on the moon?
Describe the venus atmosphere 14 how far from earth, is the moon?
The celestial coordinate analogous to latitude is called?
How far away from earth, is space?
When was the first american manned space mission to moon begun?
How can space expand faster than the speed of light?
How many stars are there, which are normally visible?
The apparent speed of the sun along the ecliptic is known as?
If the temperature of a star increases from 10,000k to 30,000k, by what factor will the rate of energy radiated per second increase?
Explain how do clouds form?