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What is the name for the celestial body of interstellar gas and dust where stars are sometimes born?
107Is the gravitational pull on an object equalized if the object is at the centre of a planet, i.e. Surrounded by the mass of the planet, which is creating the gravity?
125When a superior planet is at quadrature in reference to the earth, what is its elongation in degrees?
173Astronomers usually detect the electromagnetic emissions of a single neutron star in what single form?
112Which of the pulsating variable star whose brightness varies in a very regular time period of about 1-50 days?
191According 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?
146
How many black holes are there?
Tell me how long is it until our solar system ceases to exist?
How far from earth, is the moon?
An emission or bright line spectrum consists of?
What is super galaxy?
The kappa cygnids and the northern delta aquarids are names for what phenomena?
When a superior planet is at quadrature in reference to the earth, what is its elongation in degrees?
Is there water in moon rock?
Which are the first soviet us space mission to moon?
How many moons does neptune have?
Explain how big is venus?
Did water come from comets?
Tell me how many planets are now in the solar system?
Is pluto really a planet?
Name the part of the sun that we can see without any instruments?
