Live

Watch CBSN Live

Author Avi Loeb on evidence of close extraterrestrial encounters, new book

Professor Avi Loeb is a respected astrophysicist, former chair of Harvard's Astronomy Department, and a published author. In his new book, Loeb writes that we may have had a brush with an alien civilization a couple of years ago. Michelle Miller has the details.
View CBS News In
CBS News App Open
Chrome Safari Continue
Be the first to know
Get browser notifications for breaking news, live events, and exclusive reporting.