News tagged with radio signals

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No signals from newest Kepler planet

A newly discovered planet has been observed with the Allen Telescope Array in a search for radio signals that would betray technically sophisticated inhabitants, but no transmissions have been detected.

Jan 07, 2015
4.8 / 5 (13) 9

Mobile radio passive radar makes harbors safer

Many coastal areas and harbors go almost unprotected against acts of terror. Soon a new sensor system relying on signal echoes from cell towers can quickly detect even the smallest of attack boats. This mobile ...

Dec 01, 2014
5 / 5 (2) 0

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
4.2 / 5 (12) 7

NASA sun probe silent now for six weeks

No one knows exactly why a NASA solar probe stopped talking to Earth six weeks ago, but it's possible the spacecraft is out of power and is drifting without a way of calling for help, the agency said in an ...

Nov 12, 2014
4 / 5 (6) 1

Rainfall monitoring with mobile phones

Agriculture, water resource management, drought and flood warnings, etc.: rainfall monitoring is vital in many areas. But the observation networks remain insufficient. This is not the case for antennas for ...

Sep 02, 2014
5 / 5 (2) 0