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

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

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

Astronomers have weighed a lonely planet drifting through the Milky Way, using a rare cosmic alignment. How this exiled world ...

Scientists using the James Webb telescope observed a distant exoplanet with an atmosphere of soot and diamonds, challenging ...

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 ...

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 ...

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

In “Citizen Science in Astronomy (Part 7),” SETI Institute astronomers Dr. Franck Marchis and Dr. Lauren Sgro highlight two rare and compelling discoveries and the crucial role of citizen scientists ...

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

Researchers have found a candidate for the hypothetical Planet Nine, which could be an undiscovered giant planet way out in our solar system. However, as with all ninth planet research, the new ...

A new study published in Science marks the first time astronomers have directly measured the mass of a rogue planet, a free-floating world not bound to any star, revealing critical insights into these ...