Astronomers are closing in on evidence that a massive, unseen planet may exist far beyond Neptune. This discovery could ...

Astronomers have discovered a "fossil" body residing on the outskirts of the solar system, according to new research. The object – which goes by the formal designation 2023 KQ14 but is nicknamed ...

NASA’s Habitable Worlds Observatory "will draw on technologies proven by the agency’s Hubble, Webb and upcoming Roman Space ...

NASA Associate Administrator Amit Kshatriya said that despite many rumors about the traveler, it was definitely a comet, not ...