Thursday, April 01, 2010

An artist's concept of the Gliese 581 star system.

HELLO FROM EARTH Update... As of 7 PM California time tonight (12 PM Sydney time on Friday, April 2), it will be 31 weeks since a radio signal containing 25,878 goodwill text messages—including one by me—was transmitted to the exoplanet Gliese 581d from a giant NASA antenna in Australia. The signal will be 3.5 trillion miles (5.6 trillion kilometers) from Earth. By August 27, the radio beam will officially be 1 light-year distant from our world. Awesome. The Sent Forever signal that was transmitted from the United Kingdom at 8:07 PM (California time) on October 5 last year is now 2.8 trillion miles (4.6 trillion kilometers) from Earth as of this typing. I’ll probably submit another message by late Spring.

A satellite dish at the Goonhilly Earth Station in the United Kingdom.

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