Questions about the universe

Check for the answers in the previous video about facts of the universe.

Biospheres

I know the image already tells you the answer, but revise all the types there are around the world.

Is the Earth a sphere or a geoid?

Differences between a planet and a star?

Day and night

just watching the earth pass from day to night.

Rotation and revolution

Just wathcing how the earth rotates and revolutes:

Facts about the universe

These facts are incredible please watch them