Why Haven't We Found Alien Life? Blame Our Closed Minds

Why Haven't We Found Alien Life? Blame Our Closed Minds
AP Photo/Laura Rauch, File

Limits don't sit well with Avi Loeb.

Loeb quickly reels some off to me over the phone (hands-free) during a drive home from work: About 25 billion stars, roughly one-quarter of those that reside in the Milky Way, lie in a habitable zone. He rounds that down to an even 10 billion to keep the calculations simple.

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