"This is a structure we've never seen before, so it could be a new class of dark object." ...

A completely dark, invisible object weighing 1 million times the mass of the Sun has been detected through its gravitational ...

Planets usually stay close to their host stars, tracing steady paths shaped by gravity. Yet some planets break free and drift alone through the Milky Way.

Astronomers have found a massive cloud of metallic winds orbiting a mystery object in space. The cloud was found when ...

In 2011, astronomers announced that our galaxy is likely teeming with free-floating planets. In fact, these lonely worlds, which sit quietly in the darkness of space without any companion planets or ...

The team’s analysis points to a lensing object with a mass of 0.219 Jupiter masses, a touch lighter than Saturn or around 70 Earth masses. Its distance away from us comes out to about 9,950–10,000 ...

A tiny, dense stellar corpse in a nearby galaxy is pumping out so much energy that, on paper, it should have blown itself ...

Using NASA’s Swift and Rossi X-ray Timing Explorer (RXTE) satellites, astronomers have discovered one of the most bizarre planet-mass objects ever found. The object’s minimum mass is only about 7 ...