Astronomers report the rapid transition of WOH G64 from a red supergiant to a yellow hypergiant, based on photometric and spectroscopic observations published in Nature Astronomy.

There’s certainly nothing living on the asteroid Bennu, an airless, 1,614-ft. rubble pile orbiting the sun about 40.2 million miles from Earth. But that doesn’t mean that Bennu hasn’t all at once ...

The metallic asteroid Psyche has mystified scientists because it is less dense than it should be. Now, a new theory by researchers including scientists at the University of Arizona could […] ...