Planets
What planet was once a planet but now is a dwarf planet?
Pluto
How does a black hole from?
From a star"s explosion.
Where do comets form?
The Kuiper belt and the Orch cloud
How much gravity is needed to form a black hole when a star explodes?
10x of the speed of light.
How many super novas have happened before?
("Super nova" means two black holes collided)
2-3 super nova each century.
What was the most powerful rocket in the entire world?
Saturn V
?
70 to 10X as much as in earth and is also in the speed of light.