about account add arrow-down arrow-left arrow-right arrow-up back-arrow register-arrow book-mobile book categories chat-bubble-mobile chat-bubble close college contact-us credit-card drag email-square facebook-mobile facebook-square facebook faq film history home load modal-error person pinterest-square play-mobile play queue remove resume search share show star tick trailer trash twitter-mobile twitter-square twitter university warning warning youtube-square open-eye close-eye promo-tag tag check info info active
20

The Fermi Paradox—Where Is Everyone?

Lecture no. 20 from the course: Life in Our Universe

The Fermi Paradox—Where Is Everyone?

Taught by Professor Laird Close | 31 min | Categories: The Great Courses Plus Online Science Course

After 50 years of SETI, we have zero hard evidence of alien civilizations, "cosmic wanderlust" resulting in Earth visitations, or UFOs being extraterrestrial in nature, despite—or perhaps because of—the expansiveness of the galaxy. Speculate on reasons for, and solutions to, this so-called Fermi Paradox.

Reviews

s********m
July 6, 2017

Reply

Delete

g********t
September 2, 2015

Reply

Delete