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Arecibo Observatory

Near-Earth Space Rock Actually 'Entirely New Beast' | Mike Wall | Posted 06.15.2013 | Science

A big asteroid that flew past Earth last month belongs to a new category of space rock, scientists say. Asteroid 1998 QE2 and its moon sailed within...

Messages From Humanity to the Cosmos

Mario Livio | Posted 11.12.2012 | Science
Mario Livio

A couple of weeks ago the Arecibo Observatory in Puerto Rico sent a special radio signal to outer space. The idea of communicating with other cosmic beings has long fascinated humans. This was not the first time we have tried to "converse" with our presumed galactic neighbors.

Lee Speigel

Calling All ETs: Here Come Our Tweets From Earth | Lee Speigel | Posted 08.16.2012 | Weird News

The countdown is on. On August 15, with the push of a few buttons, a Twitter experiment of galactic proportions will launch from Earth into the cosmos...

Lee Speigel

Send ET A Tweet! | Lee Speigel | Posted 08.09.2012 | Weird News

In a social media twist on "ET phone home," citizens of Earth are invited to participate in a global Twitter event to send a message replying to an un...