Here's a look at some amazing space images from 2019
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A two million-year-old flat-faced skull pulled from the sandstones of east Africa has shored up claims that at least three species of early humans once co-existed.
Paleoanthropologist Meave Leakey at the field site where specimen KNM-ER 62000 was discovered. New fossils from Koobi Fora, northern Kenya, confirm at least three species of early humans co-existed.Mike Hettwer/National Geographic