How Radio Astronomy Helps Us See the Invisible Cosmos," astrophysicist Emma Chapman describes the hidden corners of space that only radio waves can reveal — and makes the case for contacting aliens.
Space.com on MSN
Why is humanity obsessed with aliens? Q&A with 'First Contact' author Becky Ferreira
The new science book "First Contact" is a vivid, humorous and deeply informed exploration of the many ways humanity has imagined, and actively searched for, life beyond Earth.
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