News tagged with radio signals

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City lights could reveal E.T. civilization

In the search for extraterrestrial intelligence, astronomers have hunted for radio signals and ultra-short laser pulses. In a new paper, Avi Loeb (Harvard-Smithsonian Center for Astrophysics) and Edwin Turner ...

Nov 03, 2011
4.6 / 5 (29) 54 | with audio podcast

Dawn beams back asteroid science data

(PhysOrg.com) -- The Dawn spacecraft has completed a graceful spiral into the first of four planned science orbits during the spacecraft's yearlong visit to Vesta. The spacecraft started taking detailed observations ...

Aug 12, 2011
5 / 5 (9) 5 | with audio podcast

10 years later, NY responders communicate better

(AP) -- On Sept. 11, 2001, as firefighters rushed into the smoldering twin towers, their radios went dead. Police on the scene couldn't hear orders from their superiors. And none of the agencies responding ...

Aug 10, 2011
5 / 5 (1) 0

Clocking Neptune's spin

(PhysOrg.com) -- By tracking atmospheric features on Neptune, a UA planetary scientist has accurately determined the planet's rotation, a feat that had not been previously achieved for any of the gas planets ...

Jun 29, 2011
4.8 / 5 (15) 3 | with audio podcast

Cellphone cancer warning falls lightly on US ears

(AP) -- News last week that an arm of the World Health Organization said cellphones might raise the risk of brain cancer has been greeted by Americans mostly with a shrug of the shoulder - one that's pinning ...

Jun 06, 2011
not rated yet 1