How do clouds form?
Explain how did the moon form?
Astronomers usually detect the electromagnetic emissions of a single neutron star in what single form?
According to keplers third law, plotting the squares of the periods of the planet against the cubes of the semi- major axes of their orbits will result in what sort of graph?
What moon of neptune orbits in a retrograde direction?
Which is the only star of the milky way galaxy?
Whos book, titled concerning the revolutions of celestial spheres, is considered to mark the birth of modern astronomy?
Explain how far away from earth, is space?
Who were the ancient indian astronomers?
What is the expected life of solar system?
Name the part of the sun that we can see without any instruments?
Does astronomy help you with other things in life?
Who were the ancient astronomers of the west?
Which of the pulsating variable star whose brightness varies in a very regular time period of about 1-50 days?
The hydrogen envelope that surrounds the comets nucleus derives its hydrogen most directly from?
