Rosetta data give closest-ever look at a comet

On Nov. 12, 2014, the European Space Agency's Rosetta mission made history when its Philae lander touched down on the surface of comet 67P/Churyumov-Gerasimenko. While this exciting technical achievement gained lots of headlines, ...

Sprites form at plasma irregularities in the lower ionosphere

Atmospheric sprites have been known for nearly a century, but their origins were a mystery. Now, a team of researchers has evidence that sprites form at plasma irregularities and may be useful in remote sensing of the lower ...

Antenna-on-a-chip rips the light fantastic

(Phys.org)—A device that looks like a tiny washboard may clean the clocks of current commercial products used to manipulate infrared light.

Have thieving rodents saved tropical trees?

Big seeds produced by many tropical trees were probably once ingested and then defecated whole by huge mammals called gomphotheres that dispersed the seeds over large distances. But gomphotheres were probably hunted to extinction ...

Carbon nanotubes: The weird world of 'remote Joule heating'

(Phys.org) -- A team of University of Maryland scientists have discovered that when electric current is run through carbon nanotubes, objects nearby heat up while the nanotubes themselves stay cool, like a toaster that burns ...

GSM phones -- call them unsafe, says security expert

(PhysOrg.com) -- A German security expert has issued a warning that billions of mobile phone users who depend on GSM networks are vulnerable to having their personal mail hacked. He blames the problem on network operators ...

A revolutionary breakthrough in terahertz remote sensing

(PhysOrg.com) -- A major breakthrough in remote wave sensing by a team of Rensselaer Polytechnic Institute researchers opens the way for detecting hidden explosives, chemical, biological agents and illegal drugs from a distance ...

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