The new calculations, described in a paper published Tuesday (May 20) in the journal Nature Astronomy, suggest that just 3.8 ...

The Solar System has just gotten a new official member. Currently, with the name of 2017 OF, this is a trans-Neptunian object ...

Our solar system is looking increasingly like an oddball.” The new paper explains not only the “gaping hole” in our inner solar system, he said, but also certain characteristics of Earth and the other ...

Our solar system may have a ninth planet after all ... could be a possible candidate as "Planet Nine," according to a new paper, which has been accepted for publication in the Publications ...

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

NASA's James Webb Space Telescope has made the first-ever and long-anticipated detection of ice outside of our own solar ...

A ninth planet the size of Neptune may be hidden in the far reaches of the solar system, but the evidence has left some experts skeptical.

Astronomers have found new evidence that a mysterious ninth planet may be hiding at the edge of the solar system - rewriting what we know about the cosmos again. An international team from Taiwan ...

Astronomer Eliza Kempton said that she had waited her "entire career" to peer into an atmosphere from this mysterious class ...