Home » News & Blogs » Are Aliens Plentiful, But We’re Just Missing Them?
Bookmark and Share
Starts With a Bang!

Are Aliens Plentiful, But We’re Just Missing Them?

19 Jan 2018, 15:01 UTC
Are Aliens Plentiful, But We’re Just Missing Them? Ittiz / Wikimedia Commons.

A little over 80 years ago, humanity first began broadcasting radio and television signals with enough power that they should leave Earth’s atmosphere and progress deep into interstellar space. If someone living in a distant star system were keeping a vigilant eye out for these signals, they would not only be able to pick them up, but immediately identify them as created by an intelligent species. In 1960, Frank Drake first proposed searching for such signals from other star systems by using large radio dishes, giving rise to SETI: the Search for Extra-Terrestrial Intelligence. Yet over the past half-century, we’ve developed far more efficient ways to communicate across the globe than with broadcast radio and TV signals. Does searching for aliens in the electromagnetic spectrum even make sense anymore?

Latest Vodcast

Latest Podcast

Advertise PTTU

NASA Picture of the Day

Astronomy Picture of the Day

astronomy_pod