Issues

The brief, surprising flares involved synchrotron radiation from 10 ¹⁵ -eV electrons. It’s hard to account for such rapid acceleration of charged particles to such enormous energies.

A technique hatched from concepts in acousto-optics and phase conjugation could be ideal for biomedical imaging and therapy.

To confirm a decades-old theoretical prediction, experimentalists have pushed the limits of mesoscopic sample manipulation and magnetization measurement.

Researchers have shown that the electron spins of interest for quantum computation can be electrically controlled by spin–orbit coupling.

A grassroots telescope array is taking aim at a wide range of astronomy questions, with projects in geophysics and agriculture piggybacking on its infrastructure.

As ignition experiments get under way at the National Ignition Facility, an official says the Department of Energy should be preparing for a decision on whether laser-driven fusion energy can be harnessed.

Advanced batteries, high-risk energy research, and development of clean electricity would benefit from the plan outlined in the State of the Union address. The president sends Vice President Biden and other top officials out to sell that plan.

Existing models for increasing the minuscule number of minority physics PhDs in the US include funding research experiences, forging university partnerships, and fostering a support network.

A technique that uses light to create particle collisions that create light is poised to provide unprecedented access to the inner workings of atoms and molecules.

Documents dating back to before 1000 BC describe a wind instrument whose reed vibrates back and forth across the frame that houses it. Nowadays, free-reed instruments inspire both scholarly study and musical innovation.

Scholars have uncovered complex connections between metrology, musicology, and politics in the imperial courts of third-century China.

The Moon is not wet like Earth, and it doesn’t have frozen icecaps like those on Mars. But it might be just a tiny bit damp, both inside and on its surface.