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Black and white illustration of a stylized human eye in the top left and a detailed depiction of an eyeball’s internal structure in the bottom right on a beige background.
2mins
The Well
What NASA is really looking for in space
We may be close to finding life beyond Earth. But would we even recognize it if we did? Astrobiologist Betül Kaçar explains what signs NASA is looking for.
Betül Kaçar 
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