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.

Discover why Earth's asteroid belt is disappearing and what this means for the future of our solar system, including potential impacts for Earth and beyond.

Most of these astrophysical monsters are stars with various behavioral issues, such as explosive supernovae or ridiculously ...

Huge eruptions from the Milky Way’s supermassive black hole in the distant past may have sterilized much of the inner galaxy ...

When evaluating possible planets out of the thousands out there, explained Prof. Bean, scientists look for liquid water as a ...

Researchers armed with a new "photonic lantern" device have discovered an unexpectedly asymmetrical disk of gas swirling ...

A distant gas giant the size of 10 Jupiters is now the first planet outside Earth's solar system to be mapped in three ...

Interstellar comet 3I/ATLAS is passing safely through our solar system. Learn about its discovery, its distant path, and why ...

Perihelion for 3I/ATLAS takes place on Oct. 30, when the interstellar interloper will be 1.35 astronomical units (125 million ...

Mercury reaches its greatest eastern elongation on October 29, appearing farthest from the Sun in the southwestern sky, offering a brief window for observation after sunset.

A chilling warning from late theoretical physicist Stephen Hawking has once again re-emerged after claims a mysterious 'alien ...

Newly discovered multi-wavelength view of a stellar eruption on a young Sun-like star is changing how we think about life's ...