About 50 light-years from Earth, a gas giant about half the mass of Jupiter orbits a sunlike star. The discovery of Pegasi 51 b ushered in a new era of exoplanet research.

On Wednesday, the space companies owned by two of the richest people on Earth — Elon Musk’s SpaceX and Jeff Bezos’ Blue Origin — submitted ideas to the space agency for a faster program to land ...

Astronomers say 3I/Atlas will be visible in parts of the US sky for a short time, giving viewers a unique look at a comet from beyond our solar system.

Interstellar comet 3I/ATLAS is briefly out of view as it travels around the sun this week, but researchers and amateur ...

Researchers have developed a new technology that can shape the spectrum of light emitted from a laser frequency comb across ...

"The implication of alien technology would be huge and therefore we must take it seriously,” Harvard's Avi Loeb told Newsweek ...