Physics

X-ray laser brings cellular messengers into focus

Last year's Nobel Prize in Chemistry – shared by Stanford School of Medicine Professor Brian Kobilka and Robert Lefkowitz of Duke University – recognized groundbreaking research in G protein-coupled receptors (GPCRs). GPCRs are embedded in cell membranes. They interact with signaling molecules outside of cells and trigger responses within cells.

Flawed diamonds promise sensory perfection: Electron spin extended for incredibly tiny magnetic detectors

By extending the coherence time of electron states to over half a second, scientists have improved the performance of one of the most potent sensors of magnetic fields on the nanoscale -- a diamond defect no bigger than a pair of atoms called a nitrogen vacancy center. The achievement is important news for nanoscale sensors and quantum computing.

New magnetic graphene may revolutionize electronics

Researchers have managed to give graphene magnetic properties. The breakthrough opens the door to the development of graphene-based spintronic devices, that is, devices based on the spin or rotation of the electron, and could transform the electronics industry.

NASA Sets TV Briefing Today to Discuss Space Station Status

NASA managers will discuss the status of the International Space Station, including the latest on an external cooling loop leak that developed Thursday, during a televised briefing today at 3 p.m. CDT (4 p.m. EDT).

NASA Extends Safety and Mission Assurance Contract at Marshall

NASA has exercised a second two-year award term option with Bastion Technologies Inc. of Houston for continued services to support the Safety and Mission Assurance Directorate at the agency's Marshall Space Flight Center in Huntsville, Ala.

Media Accreditation Open For Launch Of NASA's Next Mission To Mars

International and U.S. media accreditation is open for the launch of NASA's Mars Atmosphere and Volatile Evolution (MAVEN) mission.

Hubble Finds Hunks of Planet Orbiting Dead Stars

Pollution is a growing concern here on Earth, but in a nearby star cluster pollution is actually proving pretty useful. Astronomers analyzing Hubble data have found that a pair of white dwarfs — the tiny, final form most of the universe’s stars will assume — show signs of “pollution” from asteroid and planet-like debris falling upon them. The discovery not only underscores just how widespread rocky worlds are, but also opens the way to a new way of studying planet formation.

The two white

Heady mathematics: Describing popping bubbles in a foam

Two applied mathematicians have found a way to mathematically describe the evolution and disappearance of a foam. Using these equations, they were able to generate a movie that shows the complex draining, popping and rearrangement of these bubbles as the foam vanishes.

Scientists demonstrate pear shaped atomic nuclei

Scientists have shown that some atomic nuclei can assume the shape of a pear which contributes to our understanding of nuclear structure and the underlying fundamental interactions.

'Power plants': How to harvest electricity directly from plants

The sun provides the most abundant source of energy on the planet. However, only a tiny fraction of the solar radiation on Earth is converted into useful energy.

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