Issues

The parental identification was clinched by analyses of a sample of dust brought from an asteroid to Earth by a Japanese space mission.

Record-sensitive NMR measurements show that we still have more to learn about the most abundant liquid on the planet.

An orbiting spectrometer has revealed the greatest concentration of antimatter yet seen—and it’s only a few hundred kilometers away.

Embedded in a pair of shoes, circuits composed of a train of conductive droplets could generate a few watts of power—enough to charge a cell phone from a casual stroll.

NASA gives its space-station transport contractors wide latitude in developing spacecraft. After a long delay, the White House unveils its plan for a heavy-lift rocket.

Medical implants, injection-molding tools, and aircraft custom parts are just a few of the products being manufactured with technology once reserved for prototyping.

Solving the equations of general relativity presents unique challenges. Nowadays many of those have been met, and new numerical simulations are revealing surprising astrophysical phenomena.

Reactions to the science of global warming have followed a similar course to those of other inconvenient truths from physics.

It is urgent that climate scientists improve the ways they convey their findings to a poorly informed and often indifferent public.

In space, no one can hear you scream. But if you are a dying quasar, you can call attention to your death with a brilliant light show.