Last year, astronomers were fascinated by a runaway asteroid passing through our Solar System from somewhere far beyond.

Close-up observations of the Sun explain how solar flares start, grow, and send high-energy particles racing through space.

Outer space contains more incredible phenomenons and unsolved mysteries than anywhere else—and we think it's just fascinating ...

Point Galaxy is an outer space riff on Point Salad, twisting that board game's score-focused play without overcomplicating it ...

The Juno observations showed that Jupiter has an equatorial diameter of 88,841 miles (142,976 km), which is about 5 miles (8 ...

The solar system’s most giant planet is slightly less of a giant than scientists once thought. Jupiter, a planet so huge it could hold 1,000 Earths, is 8 kilometers less wide at its equator and 24 ...

For the first time, researchers have found what seems to be a cloud of dark matter about 60 million times the mass of the sun in our galactic neighbourhood ...

A young star called V1298 Tau is giving astronomers a front-row seat to the birth of the galaxy’s most common planets. Four ...

Jupiter’s swirling storms have concealed its true makeup for centuries, but a new model is finally peeling back the clouds.

Astronomers have found thousands of exoplanets around single stars, but few around binary stars—even though both types of stars are equally common. Physicists can now explain the dearth.

Using data collected by NASA's Parker Solar Probe during its closest approach to the sun, a University of Arizona-led ...

The atmospheric carbon dioxide was thought to be the result of the oxidation of oxygen molecules in the exosphere. As a consequence of this discovery, Rhea became the first Saturnian moon, and only ...