Robert Roy Britt

Our bubble is being pinched and bullied backward by another expanding bubble forged from multiple supernovas.

Astronomers have spotted what they think is evidence for the ignition switch that turns on super-bright galaxies called quasars.

The most distant explosion ever recorded, signaling the birth of a black hole, was more chaotic and lasted longer than astronomers would have expected.

A new asteroid tops astronomers list of those to watch, with the odds of an impact put at about 1-in-1,000 for May 4, 2102.

Astronomers have detected a new type of cosmic outburst that they can't yet explain. The event was very nearby, they said.

Astronomers have found that a diffuse X-ray glow in our galaxy is not mostly from hot gas but rather from old stars that have yet to be counted.

A developing star has been found to have two disks of material rotating in opposite directions. The discovery hints at a future solar system with planets going this way and that.

Planets might exist around a blazing hot star so big its diameter exceeds the orbit of Mars, astronomers said today.

Mars is the most Earth-like other world known, yet the two planets are really a world apart.

First there was one, now a handful of stars have been found leaving the galaxy and many more are expected. The exodus represents a new class of intergalactic objects.

Glacial deposits near the equator on Mars are remnants of snow on the red planet long ago, scientists said today.

One of the biggest cosmic dust storms of the past 80 million years left a blanket of material on Earth after an asteroid in space broke apart, researchers said today.

New computer modeling shows that the planet Mercury might have formed in a hit-and-run collision that stripped off its outer layers.

Astronomers have the best evidence yet to pin down how many stars form in our galaxy every year.

A new study provides the best estimate to date of the diameter and heft of Pluto’s moon Charon and suggests the satellite likely has no atmosphere.

Two new studies throw some seriously cold water on the whole water-on-Mars scenario.

The past year in space science and astronomy was dominated by debate and some tantalizing near-findings.

If there is any life in the belly of Mars, some of it might be found around meteor craters, where rock has been tossed up from deep down.

A swath of space beyond Neptune is getting stranger all the time as astronomers find an ever-more diverse array of objects, orbits and groupings.

A distant eruption of high-energy gamma rays is evidence for a black hole swallowing another dense object called a neutron star, astronomers announced today.

The brightest star in our sky has a companion that’s smaller than Earth yet 98 percent as massive as the Sun.

Astronomers don't know what it is, but every now and then they find more evidence of dark matter and pin down where the mysterious stuff resides.

Astronomers have spotted exploding stars called supernovas in various stages of evolution. But until now they had no clear view of the point when a supernova becomes what's called a remnant.