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The Mind-Boggling Theory That We Could Be Descended from Martians – VICE
Amir Siraj, a student studying astrophysics at Harvard University, talks about the potential spread of life throughout the Milky Way in a VICE News interview

February is a blockbuster month for Mars missions. The United Arab Emirates and China have both arrived successfully in Martian orbit this week, and NASA is due to land its Perseverance rover on the red planet next Thursday.
All of these missions are, to some degree, tasked with assessing whether Mars might have hosted life in its distant past, billions of years ago. This question is not only crucial to our understanding of Mars habitability, it also has implications for life on Earth: many scientists…
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