Astronomers have discovered a planetary system that appears to flip one of astronomy's most reliable rules on its head.
NASA announced a new milestone in its search of the stars. It has now found more than 5,000 exoplanets -- those outside of our solar system. “It’s not just a number,” Jessie Christiansen, a researcher ...
Key takeawaysIf a gas giant planet is big enough to ignite deuterium fusion, it becomes a brown dwarf instead of a planet.
Far from our solar system, astronomers have spotted a world that looks less like a sphere and more like a squeezed lemon, a distorted gas giant that refuses to behave the way planetary theory says it ...
A distant star system with four super-sized gas giants has revealed a surprise. Thanks to JWST’s powerful vision, astronomers detected sulfur in their atmospheres — a chemical clue that they formed ...
Computer simulations suggest NASA’s Habitable Worlds Observatory could detect Earth-like exomoons around gas giant exoplanets through reflected starlight and lunar eclipses.