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 ...

Astronomers have finally weighed a wandering “rogue” planet, uncovering a Saturn-mass world flung into the galaxy after a ...

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

While most planets that we are familiar with stick relatively close to their host star in a predictable orbit, some planets ...

There's a class of objects in the cosmos that are neither stars, nor are they quite planets. And with this new research, scientists have improved our understanding of these elusive free-floating ...

Although mass is the most important property of stars, it has proved very hard to measure for the lowest mass objects in the universe. Thanks to a powerful new camera, a very rare, low-mass companion ...

A research group is reporting the detection of extragalactic planet-mass objects in a second and third galaxy beyond the Milky Way after the first detection in 2018. With the existing observational ...

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 ...

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 ...

Everything that physically exists has mass, but one big question that continues to baffle physicists is whether or not it's possible for an object to have negative mass. It may be possible for an ...

The more our world fills up with junk, the more artists make supplies out of the detritus of our society. There are so many artists working with found object media now that there are ...

Astronomers have, for the first time, pinned down both the mass and distance of a planet that drifts through the galaxy ...