Composition anomalies: nickel-rich, iron-poor signatures

Avi Loeb, PhD, is a theoretical physicist and Frank B. Baird, Jr., Professor of Science at Harvard University. He is the author of several books, the most recent of which is "Interstellar: The Search for Extraterrestrial Life and Our Future in the Stars."

https://lweb.cfa.harvard.edu/~loeb/

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