What are the scientific names for the two regions of a sunspot?
What is the effect of gravity at the center of a planet?
How many earths can fit into jupiter s great red spot?
How many types of galaxies are there?
Tell me how many moons does saturn have?
Who stated that planets are originated from the collision of the sun and comet?
The time taken by aryabhatta for one revolution around the earth?
How far from earth, is the moon?
What term is most commonly used to refer to the actual motion that stars have in relation to each other, and over many years will lead to changes in the shapes of constellations?
Why did you want to become an astronomer?
The work of this harvard college observatory scientist made possible the first accurate determination of extragalactic distances by what is often called henriettas law?
Which planet in our solar system has the most circular orbit?
Explain how old is our earth?
How many moons does neptune have?
How were the earth, sun and moon formed?