Somewhere around 50 light-years from Earth, a dim red dwarf star called LHS 1903 hosts four planets arranged in an order that ...

Talk about a hot mess. Scientists have uncovered a hellish “lava world” where temperatures soar to a blistering 2,700 degrees Fahrenheit — hot enough to melt rock into a churning ocean of magma and ...

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 ...

For decades, the solar system set the template: small rocky planets close to the star, gas giants farther out, beyond a ...

Astronomers have spotted an unusual planetary system with a rebellious rocky planet orbiting well beyond where it would be expected to form. And in the newly spotted system of four planets, the first ...

Scientists have discovered a bizarre planetary system where a rocky world orbits farther out than giant gas planets, defying ...

Tylos (or WASP-121b) is a gaseous, giant exoplanet located some 900 light-years away in the constellation Puppis. Astronomers have used four massive telescopes in Chile to look into a planet's ...

Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory about the possibility of a giant ninth planet. The dwarf planet's existence ...

Fragments of the hellish, lava-covered "proto-planet" that existed before Earth 4.5 billion years ago have survived unaltered in ancient rocks, groundbreaking new research reveals. The fragments ...

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NORFOLK, Va. — Each planet in our solar system takes a different amount of time to complete one orbit around the sun. For example, Mercury, being closest to the sun, takes just 88 Earth days to ...

A provocative new study suggests Dante’s Inferno may have secretly doubled as a giant cosmic impact scenario centuries before ...