What is the name for the celestial body of interstellar gas and dust where stars are sometimes born?
The celestial coordinate analogous to latitude is called?
How do clouds form?
Who were the ancient astronomers of the west?
Give the common name for the phenomenon which is the result of sunlight reflecting off the earth and faintly illuminating the darkened portion of the moon?
Do black holes exist in reality?
Do galaxies interact?
How many stars are there, which are normally visible?
How is venus like earth?
The time taken by aryabhatta for one revolution around the earth?
This powerful telescope weighs about 11 tons, has a primary mirror 7.9 feet in diameter, and orbits about 380 miles above the earth?
Which is the landing craft used by armstrong on the moon?
Is the gravitational pull on an object equalized if the object is at the center of a planet, i.e. Surrounded by the mass of the planet, which is creating the gravity?