For more than a century, astronomers have known that some “new stars” flaring into view are not births at all but violent ...

Astronomers have long struggled to capture the true nature of stellar nova explosions. However, thanks to cutting-edge techniques, a team of scientists has finally been able to observe these cosmic ...

A nuclear winter is a theoretical concept, but if the climate scenario expected to follow a large-scale nuclear war, in which smoke and soot from firestorms block sunlight, came to fruition, global ...

In this special issue of the Bulletin of the Atomic Scientists, published by SAGE, experts reflect on 2011 and highlight what to look out for in 2012 in the areas of nuclear energy, nuclear weapons, ...

Cosmic “touchdown airbursts” — explosions of comets or asteroids above Earth’s surface — may be far more common and ...

Astronomers used major telescopes across the world to probe a cosmic explosion 8 billion light-years from the solar system.