Astronomy, Study | featured news

More than 35 years after it launched on a mission to explore the cosmos, NASA's unmanned Voyager spacecraft appears to have left the solar system and is in a "new region" of space, said a study Wednesday.

A pair of Earth-size worlds orbiting a dying star may be the fractured remnants of a single Jupiter-like gas giant, a new study says.

Two years ago, scientists at the National Center for Atmospheric Research in Boulder, Colo., released a study claiming that inconsistencies between satellite observations of Earth's heat and measurements of ocean heating amounted to evidence of "missing energy" in the planet's system.

The chemical building blocks that make life possible on Earth may have aged to perfection in asteroids, according to a new study.

The moon is shrinking ever so slightly, but there is no cause for alarm, according to a new study that has discovered a clutch of previously unseen faults on the lunar surface from photos taken by a NASA probe.

A rare sun-like star that is both young and relatively close to Earth has been found to be harboring an even weirder object - a failed star locked in a close orbit around its host, according to a new study.

A large asteroid in space that has a remote chance of slamming into Earth would most likely hit in 2182, if it crashes into our planet at all, a new study suggests.