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

"The extraordinary results are an essential step toward understanding the initial conditions that lead to the formation of ...

The Hubble Space Telescope time-lapse captured footage of Jupiter, Saturn, Uranus and Neptune. Credit: SCIENCE: NASA, ESA, ...

How Many Planets Are There in the Solar System? There are 8 planets in our solar system. The planets orbit the Sun in ...

Jupiter, the largest planet in the ... in the journal Nature Astronomy, rewinds the clock to just 3.8 million years after the first solid objects formed in the solar system and the cloud of ...

An accidental discovery might change how we think about one of the most mysterious structures in our solar system.

On May 21, the International Astronomical Union’s Minor Planet Center announced the ... the most distant region in our solar system, which is home to many comets, and then sent back,” Cheng ...

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system.

Despite possibly being the fifth most massive planet, scientists have never tracked the white whale of astronomy down ... for a ninth planet in our solar system has been going on for a century.

A potential new dwarf planet has been discovered in the outer reaches of the solar system, and its existence poses the greatest challenge yet to the hypothesis that a ninth planet lurks far from ...

Jupiter is not only the largest in the solar system, but is so humongous that it's more than twice as massive as the other planets combined ... of physics and astronomy at the University of ...