The catalog of known worlds beyond our solar system has crossed another threshold. NASA’s official tally now exceeds 6,000 ...

Mysterious Interstellar Comet Carries Water Unlike Anything in Our Solar System ...

An interstellar comet that blazed past the sun last year could be nearly three times older than our solar system and is ...

While life on Mars (and Venus) has long been an obsession for those wondering if we're alone, there are other places in our ...

For astrobiologists, the search for life beyond our solar system could be likened to where one would look in a vast desert—essentially, where there's water. And it turns out that one of the most ...

Currently, the closest exoplanet to Earth is Proxima Centauri b, which orbits the star Proxima Centauri, located 4 ...

In a first-of-its-kind discovery, astronomers claim they have directly measured the magnetic fields of multiple planets beyond our solar system — potentially providing a crucial new tool in the search ...

Astronomers using the James Webb Space Telescope say they have detected the “strongest evidence yet” that life exists outside our solar system. Scientists at the University of Cambridge found signs of ...

AMES, Iowa – An international team of astronomers has used nearly three years of high precision data from NASA’s Kepler spacecraft to make the first observations of a planet outside our solar system ...

A newly discovered interstellar comet is hurtling around us, only the third interloper object to be observed in our solar system. It is not expected to pose an impact risk to Earth, but telescopes ...

The outer solar system once seemed like a quiet backwater. But a glut of tiny, strange moons with unruly orbits are coming ...

Sub-Neptune exoplanets tend to be much closer to their host star than Earth is to the Sun and are thought to have atmospheres made of steam over layers of an exotic phase of water that behaves like ...