Last week, one of Elon Musk's SpaceX rockets crashed back to Earth, and a large chunk of a Blue Origin rocket's nose cone washed up on the shore of a Bahamian island.

But what happens when space objects fall back into Earth? 

Astrophysicist & Cosmologist, Brad Tucker, told Sofie Formica on 4BC Afternoons, "The question is always when and where, and this is actually the crux of the problem."

"Some of it does burn into the Earth's atmosphere, but for the most part, it does make its way to the Earth," Mr Tucker continued. 

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