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What is the name for the celestial body of interstellar gas and dust where stars are sometimes born?
103Is 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?
121When 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?
108Which of the pulsating variable star whose brightness varies in a very regular time period of about 1-50 days?
187According 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
Tell me how many moons does jupiter have?
What is distance from the earth to the moon?
How were the earth, sun and moon formed?
How old is our earth?
What is the density of stars?
How was the moon formed?
Which unmanned space vehicle fetched roak pieces from the moon?
Tell me how long is it until our solar system ceases to exist?
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?
Tell me how long is a year on saturn?
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?
What is the constant called that is the average flux of the suns energy arriving at the earth?
What is the effect of gravity at the center of a planet?
How many moons do mars have?
How do clouds form?
