'Space bubbles' may have aided enemy in fatal Afghan battle

In the early morning hours of March 4, 2002, military officers in Bagram, Afghanistan desperately radioed a Chinook helicopter headed for the snowcapped peak of Takur Ghar. On board were 21 men, deployed to rescue a team ...

New time code to boost reception for radio-controlled clocks

(Phys.org) —The National Institute of Standards and Technology (NIST) is changing the way it broadcasts time signals that synchronize radio-controlled "atomic" clocks and watches to official U.S. time in ways that will ...

Radio telescope, GPS use ionosphere to detect nuclear tests

(Phys.org)—U.S. Naval Research Laboratory radio astronomer, Joseph Helmboldt, Ph.D., and researchers at Ohio State University Department of Civil, Environmental and Geodetic Engineering analyzed radio telescope interferometry ...

New high standards for emergency wireless devices

First responders rely increasingly on wireless communication devices, and in emergencies they cannot afford major signal loss or delay caused by attenuation, interference, or reflection. Because lives are on the line and ...

SMOS satellite measurements improve as ground radars switch off

Over a dozen radio signals that have hindered data collection on ESA's SMOS water mission have been switched off. The effort also benefits satellites such as NASA's Aquarius mission, which measures ocean salinity at the same ...

Space weather expert has ominous forecast

A stream of highly charged particles from the sun is headed straight toward Earth, threatening to plunge cities around the world into darkness and bring the global economy screeching to a halt.

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