Explain if gravity only attracts mass and if light does not have mass why does it appear to bend when passing a planet?
Explain how far away from earth, is space?
Tell me how many moons does jupiter have?
Explain how can space expand faster than the speed of light?
Tell me how many black holes are there?
Explain is pluto really a planet?
Tell me how long is a day on saturn?
Explain the venus atmosphere.
Tell me how many earths can fit into jupiter s great red spot?
Explain how old is our earth?
Tell me how many moons do mars have?
Tell me how many moons do ceres have?
Explain how does gravity affect life on pluto?
Tell me how many planets are now in the solar system?
Tell me how many moons does saturn have?