News tagged with radio

DRAGNs in the sky

A radio galaxy is a galaxy that emits large amounts of radio waves. They were first discovered in the 1950s, but it wasn't until the 1960s when a technique known as aperture synthesis was developed that we ...

Sep 09, 2014
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Near error-free wireless detection made possible

(Phys.org) —A new long-range wireless tag detection system, with potential applications in health care, environmental protection and goods tracking, can pinpoint items with near 100 per cent accuracy over ...

Jan 23, 2014
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Talking to aliens

What do you say to a space alien? This question might not be the foremost puzzle in your life, but it was the subject of a lively two-day conference at California's SETI Institute this week.

Nov 17, 2014
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