Physics

How do very small particles behave at very high temperatures?

A nanomaterials expert has been looking at how small gold particles survive when subjected to very high temperatures.

Study suggests the elusive neutrino could make up a significant part of dark matter

Physicists trying to understand the fundamental structure of nature rely on consistent theoretical frameworks that can explain what we see and simultaneously make predictions that we can test. On the smallest scale of elementary particles, the standard model of particle physics provides the basis of our understanding.

Students to Compete in NASA's Human Exploration Rover Challenge; Media Invited

Media are invited to the U.S. Space & Rocket Center in Huntsville, Alabama, Friday, April 13, and Saturday, April 14, for NASA's Human Exploration Rover Challenge.

Why noise can enhance sensitivity to weak signals

A team of Japanese researchers has discovered a new mechanism to explain stochastic resonance, in which sensitivity to weak signals is enhanced by noise. The finding is expected to help electronic devices become smaller and more energy-efficient.

Oldest magnetic record in the solar system discovered in a meteorite

Researchers have found that an iron-containing mineral called dusty olivine, present in meteorites, retains a record of the magnetic field from the early solar system around 4.6 billion years ago. The results are surprising, as the magnetism in dusty olivine is non-uniform, and non-uniform magnetic materials have previously been thought to be poor magnetic recorders. The discovery may lead to new insight into how the solar system formed—with the help of magnetic fields—from a protoplanetary disk.

Computer simulation of boiling phenomena, bubble formation and two-phase bubbly flow inside nuclear reactors

The intrinsic beauty of bubbles—those thin watery spheres filled with air or other gases—has long captured the imagination of children and adults alike. But bubbles are also a linchpin of nuclear engineering, helping to explain the natural world, predict safety issues and improve the operation of the existing and next-generation nuclear fleets.

'Frogs' and 'mushrooms' bubble up in quantum fluids

Quantum fluids may mix in very weird ways, according to new computer simulations of exotic states of matter known as Bose-Einstein condensates.

NASA Awards Contract for Logistics Support Services

NASA has awarded a contract to L&M Technologies Inc. of Albuquerque, New Mexico, to provide logistics support services at the agency's Marshall Space Flight Center in Huntsville, Alabama.

Physicists zoom in on mysterious 'missing' antimatter

When the Universe arose some 13.7 billion years ago, the Big Bang generated matter and antimatter particles in mirroring pairs. So the reigning physics theory goes.

Photosynthetic protein structure that harvests and traps infrared light

Scientists have solved the structure of a photosynthetic protein to reveal how it converts near-infrared light into an electrical charge. The new study gives a pioneering insight into the efficiency and limits of the life-giving process, photosynthesis.

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