Physics

NASA Chases Climate Change Clues Into The Stratosphere

Starting this month, NASA will send a remotely piloted research aircraft as high as 65,000 feet over the tropical Pacific Ocean to probe unexplored regions of the upper atmosphere for answers to how a warming climate is changing Earth

NASA Media Accreditation Now Open for TDRS-K Launch

NASA's Tracking and Data Relay Satellite-K (TDRS-K) launch media accreditation now is open. Liftoff will be aboard an Atlas V rocket from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. Liftoff is targeted for Tuesday, Jan. 29, at 8:52 p.m. EST at the opening of a 40-minute launch window.

Kentucky Students to Speak with Space Station's Tom Marshburn

Students of all ages, educators and pre-service teachers will gather at Eastern Kentucky University to speak with International Space Station astronaut Tom Marshburn on Friday, Jan. 11. The long-distance conversation is scheduled to begin at 9:45 a.m. EST and can be seen live on NASA Television and the agency's website.

Testing Einstein's E=mc2 in outer space

A team of physicists have stirred the physics community with an intriguing idea yet to be tested experimentally: The world's most iconic equation, Albert Einstein's E=mc2, may be correct or not depending on where you are in space.

Bottom-up approach provides first characterization of pyroelectric nanomaterials

By taking a "bottom-up" approach, researchers have observed for the first time that "size does matter," in regards "pyroelectricity," -- the current/voltage developed in response to temperature fluctuations that enables technologies such as infrared sensors, night-vision, and energy conversion units, to name a few.

Counting the twists in a helical light beam: New device could help advance future optical communications

At a time when communication networks are scrambling for ways to transmit more data over limited bandwidth, a type of twisted light wave is gaining new attention. Called an optical vortex or vortex beam, this complex beam resembles a corkscrew, with waves that rotate as they travel. Now, applied physicists have created a new device that enables a conventional optical detector (which would normally only measure the light's intensity) to pick up on that rotation.

Look at This: Robonaut 2 Put to Work Aboard the ISS

It looks like an astronaut. It acts like an astronaut. And here, on January 2, it operates the valves on a task board like an astronaut.

Robonaut 2 is the second iteration of NASA's attempts to put a human-like robot in space, and he is fast approaching his second anniversary aboard the International Space Station. In this case he is taking directions from a crew on Earth to operate a slew of valves in the Destiny Laboratory, but he can also be controlled by his fellow astronauts in space

2.5 million seagulls needed to hoist Dahl's giant peach

Physicists have taken a close look at Roald Dahl's children's book, "James and the Giant Peach," in which a flock of gulls fly an outsize fruit and its occupants across the Atlantic.

Metal surface can repel electric charges

(Phys.org)—Metals are known for being good electrical conductors. Due to this property, a stationary electric point charge placed outside a metal will cause the electrons in the metal to redistribute in such a way that the point charge will always be attracted toward the metal surface. However, a new study shows that a metal surface will repel an electric charge packet moving parallel to it when the charge packet has a certain geometry and travels at a sufficiently high energy.

Photon amplification, emission observed in plastic scintillation materials

A research team has observed, in polystyrene-based scintillation materials, photon amplification and emission that cannot be explained with the established scintillation mechanism. Photon yield from the polystyrene-based scintillation materials was found to increase in accordance with a power-law of concentration of fluorescent molecules doped in polystyrene.

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