Physics

NASA TV Briefing Discusses Alpha Magnetic Spectrometer Results

NASA will hold a news conference at 1:30 p.m. EDT on Wednesday, April 3, to discuss the first results of the Alpha Magnetic Spectrometer (AMS) experiment. AMS is a state-of-the-art cosmic ray particle physics detector located on the exterior of the International Space Station.

NASA Announces 17th Screening of Space Program Artifacts

NASA is inviting eligible educational institutions, museums and other organizations to screen and request historical space artifacts.

NASA Seeks Academic Partners for Smallsat Technology Collaboration

NASA is seeking small spacecraft technology project proposals from U.S. colleges and universities that would like to collaborate with agency researchers.

NASA Announces 17th Screening of Space Program Artifacts

NASA is inviting eligible educational institutions, museums and other organizations to screen and request historical space artifacts.

Osmosis: Everything you know about it is (probably) wrong

Osmosis – the flow of a solvent across a semipermeable membrane from a region of lower to higher solute concentration – is a well-developed concept in physics and biophysics. The problem is that, even though the concept is important to plant and human physiology, osmosis is understood in biology and chemistry in a much simpler – and often incorrect – way.

Watching fluid flow at nanometer scales: Tiny nanowires can lift liquids as effectively as tubes

Imagine if you could drink a glass of water just by inserting a solid wire into it and sucking on it as though it were a soda straw. It turns out that if you were tiny enough, that method would work just fine -- and wouldn't even require the suction to start. New research has demonstrated for the first time that when inserted into a pool of liquid, nanowires naturally draw the liquid upward in a thin film that coats the surface of the wire.

Quantum dot commands light: A solid state ultrafast logic gate on a photon

If you could peek at the inner workings of a computer processor you would see billions of transistors switching back and forth between two states. In optical communications, information from the switches can be encoded onto light, which then travels long distances through glass fiber. Researchers are working to harness the quantum nature of light and semiconductors to expand the capabilities of computers in remarkable ways.

Watch This: Comet May Be Headed For Impact with Mars

If you're among those who would like to call Mars home someday, we would suggest holding off until at least next fall. That's when NASA says a comet may ram into the Red Planet.
Comet 2013 A1 is currently clipping along at about 125,000 miles per hour and measures somewhere between 0.5 and 2 miles in diameter. Its trajectory is set to cross Mars' orbit in October 2014. How likely are the two bodies to hit? Not very. The chances are a mere 1 in 2,000.

But if the comet does hit the surface of

Creating Art from Microbes and Molecules

Maverick Joe Davis creates art—and controversy—out of bacteria, deep space transmissions, and lightning.

April Sky: Halos and Dogs

Clouds and a full (or nearly so) moon are required for a sight almost as rare as a werewolf: the elusive moon dog.

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