User:Aishabain/sandbox

simple trick

Some reasonable facts
1. A black hole is invisible because it is a region of very less area having extreme gravity. The gravity is so much greater that even light cannot escape from it, which makes it invisible

2. The earth is not a satellite, as it revolves around the sun ,not a planet.

3. Jupiter is not a star because there is no nuclear fusion in the core of jupiter for liberation of energy.