Learn how a possible ninth planet, the theoretical Planet X, could have acquired its wide orbit in the outer Solar System - a ...

Astronomers have revealed new research showing that millions of new solar system objects are likely to be detected by a brand-new facility, which is expected to come online later this year.

OF201 spends only 1% of its orbital time close enough to us to be detectable. The presence of this single object suggests ...

Scientists have unlocked one of the solar system's many secrets from an unexpected source: a planetarium show.

Astronomers find evidence of a possible ninth planet beyond Neptune, reigniting the debate about the formation of the Solar ...

Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million ...

Astronomers have discovered a mysterious dwarf planet, 2017 OF201, far beyond Pluto. This discovery challenges existing ...

Astronomers may have found a new candidate for the role of the ninth planet in the solar system.

A group of astronomers from across the globe, including a team from the University of Washington and led by Queen's ...

Dozens of NASA's missions to explore the cosmos could be in jeopardy under a budget proposal from the Trump administration.

A computer simulation predicts that the Rubin Observatory will discover millions of previously undetected objects in the ...

Jupiter, the largest planet in the solar system, was 2 to 2.5 times bigger in its earlier life, according to new research. Credit: NASA / JPL-Caltech / SwRI / MSSS / Tanya Oleksuik Jupiter ...