Astronomers have reported evidence of a massive possible exomoon in the distant CD-35 2722 system, where one giant object ...

Researchers tested whether they could detect unusual radio signals coming from an interstellar object passing through our ...

Caltech researchers show the Sun’s own dying mass ejections will destabilize the outer solar system within a billion years of ...

A brown dwarf orbits the star, while the newly detected object appears to circle the brown dwarf, creating an unusual ...

NASA’s Nancy Grace Roman Space Telescope launched on Aug. 30, 2026, beginning a journey that will take it about a million ...

Astronomers have uncovered evidence of a bizarre, potentially historic discovery: the first moon ever detected beyond our ...

You can be moving at extraordinary speed and still feel completely stationary. The reason comes down to the difference between velocity and the changes in motion your body can actually detect.

Exotic chemical elements in the atmosphere of a dead star hint at the presence of a planet that formed after the star’s death ...

A new study suggests the Sun's chaotic mass loss could destabilize the Solar System 100 times faster than previously thought, ...

Mars is the obvious frontrunner, but it is far from an easy second home. The other candidates reveal just how rare truly human-friendly conditions may be.

JAXA's 2026 MMX mission will return samples from Phobos to resolve whether Mars' moon is a captured asteroid that delivered ...

Alien planetary systems appear to fall into two distinct families, with some enjoying relatively calm orbits while others ...