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There are about 1700 working spacecraft circling earth

The pieces are called space debris

The night sky is full of stars

Are people safe from falling space junk.

These satellites are made by people

NASA says there are millions of pieces of space junk circling the earth

Space garbage moves very fast

Astronauts live on the ISS

How the sky is filled with beautiful stars

The history of how satellites are made

How space is becoming crowded with old satellites

How scientists want to fix the problem