Physics

Perseid Meteor Shower Set to Dazzle This Weekend

One of the year's best annual light shows is this weekend: the Perseid meteor shower, which will be at prime viewing in North America on the nights of August 11-12 and 12-13.
The Perseids make their appearance every year in early- to mid-August when Earth passes through the remnants of Comet Swift-Tuttle. Those pieces of dust and rock stuck in the comet's orbit ram into our atmosphere at 132,000 mph, burning up in the process and providing a dazzling show.
The Perseids have always been popul

Researchers discover midair collisions enhance the strength of sandstorms

(Phys.org) —A small team of researchers from China, Brazil and Switzerland has found that midair collisions that occur between grains of sand during a sandstorm lead to an increase in storm strength rather than a decrease as would be expected. In their paper published in the journal Physical Review Letters, the team describe how they developed a 3D computer simulation that was able to show how grains of sand behave in a storm and what they observed as a result.

NASA Hosts Students, Community for Voyage Back to School

NASA’s Johnson Space Center and Space Center Houston will host “Voyage Back to School,” a free, public event from 4-7 p.m. CST Thursday, Aug. 15.

NASA Invites Children and Families to Learn about the Lunar Laser Communication Demonstration

NASA's Goddard Space Flight Center Visitor Center in Greenbelt, Md., will host this month's Sunday Experiment on Aug. 18 from 1 p.m. to 3 p.m. EDT.

Efficient and robust: Why quantum transport can be close to optimal even in disordered molecular structures

Physicists show why quantum transport can be close to optimal even in disordered molecular structures. 

New insights into the polymer mystique for conducting charges

With its ever-escalating pursuit of high efficiency and low cost, the electronics industry prizes understanding specific behaviors of polymers. Now there's help in appreciating the polymer mystique related to the emerging field of molecular conduction in which films of charge-transporting large molecules and polymers are used within electronic devices.

Controlling skyrmions for better electronics

Physicists at the University of Hamburg managed for the first time to individually write and delete single skyrmions, a knot-like magnetic entity. Such vortex-shaped magnetic structures exhibit unique properties which make them promising candidates for future data storage devices. Skyrmions have been in the focus of active research for the last years; however, up to now these states have been merely investigated, a controlled manipulation has not been achieved.

How the Sun's Corona Gets So Hot

The phenomenon of "solar braiding," hypothesized 30 years ago, has now been validated by images from an orbital telescope.

Astronaut Michael Foale Leaves NASA After 30-Year Career

NASA astronaut Michael Foale has retired, ending a 26-year space agency career that included 375 days in space during six space shuttle missions and extended stays aboard two space stations.

Astronaut Michael Foale Leaves NASA After 26-Year Career

NASA astronaut Michael Foale has retired, ending a 26-year space agency career that included 375 days in space during six space shuttle missions and extended stays aboard two space stations.

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