So far, two interstellar celestial bodies have been discovered hurtling through the solar system. Evidence of the next one is ...

And astronomers have a brand-new, superpowerful eye with which to see the changing cosmos: the Vera C. Rubin Observatory in ...

The universe is a happening place—full of exploding stars, erupting black holes, zipping asteroids, and much more. The Rubin Observatory released its first images last week, and they’re stunning—vast, ...

James Webb’s mid-infrared vision has likely captured a frigid, Saturn-mass planet shaping the dusty rings around the nearby ...

The freshly minted telescope discovered 2,000 previously unknown asteroids in just 10 hours. Weirdly, NASA doesn’t seem to ...

Astronomers celebrated the release of the first images from the Rubin Observatory — and registered hundreds of its first ...

Its size is estimated to be a bit smaller than Ceres, which is the smallest of the solar system's five recognized dwarf planets and has a diameter of about 950 km. Pluto, the largest of those ...

The International Astronomical Union’s Minor Planet Center added 2017 OF201 to its database last week. Five other dwarf planets are officially recognised: Pluto, Eris, Ceres and two others ...

The International Astronomical Union's Minor Planet Center announced the finding this month. This illustration shows just how wide 2017 OF201's orbit is, compared with the orbits of solar system ...

WASHINGTON (Reuters) -Scientists have identified an object about 435 miles (700 km) wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet, spotting it ...

U.S. astronomers hunting for "Planet Nine" have ... The new discovery was officially announced by the International Astronomical Union's Minor Planet Center on May 21.

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system. The object—which orbits out beyond Neptune—has been named "2017 OF201" by the ...