In doing so, they found this orphan is within the same weight class as Saturn, strengthening the case that the galaxy teems ...

Astronomers just measured the mass of a free-floating planet without a star for the first time ...

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

A new study published in Science marks the first time astronomers have directly measured the mass of a rogue planet, a ...

The James Webb Space Telescope detected an atmosphere on a lava-covered exoplanet, evidence that small planets close to stars ...

The Saturn-sized celestial object is one of the clearest examples yet of a planet drifting through space without a host star.

Not every large object in space forms part of a solar system. There are some big objects that exist in isolation in space, without either being a star or orbiting one. One of these, SIMP 0136, wanders ...

From Earth’s oldest rocks to glowing swamp lights and hidden ocean life, scientists in 2025 uncovered clues beneath our feet ...

With sapphire waterfalls, lava rain and orbits around dead stars, these distant worlds push the limits of what’s possible.

Using observations from both ground-based telescopes and space instruments, they were able to measure the planet's size and ...

From ancient fire-making and dinosaur footprints to planet parades and chimp medicine, 2025 science revealed wonder, surprise ...

Forbes contributors publish independent expert analyses and insights. Leslie Katz covers the intersection of culture, science and tech. A yellowish-orange glow bathes Phainoterra, a planet of dramatic ...