This icy world, temporarily named 2017 OF201, could be a distant cousin of Pluto — and scientists mean "distant" quite literally. At its farthest point, it's more than 1,600 tim ...

This distant world could potentially ... is currently journeying beyond the Kuiper Belt, the region where Pluto resides. However, even New Horizons has yet to reach the outermost reaches of ...

A newly detected planet beyond Pluto is not just expanding our understanding of the Solar System, it might be quietly rewriting it. Astronomers from the University of Taiwan recen ...

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

The probe’s arrival at the dwarf planet nine years later was a stunning moment in space exploration, with New Horizons returning breathtaking images of a surprisingly complex world of craggy ...

The universe is a complete unknown to humans. We are not yet able to control and understand the system in which Earth is located, as evidenced by the possible discovery made by a g ...

There’s a new frozen oddball orbiting the Sun, and it’s not your average space rock. It’s a planet—a minor one, to be fair—but one of the largest yet discovered and with an orbit around the Sun that ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Our understanding of the solar system is a work in progress. Pluto ...

The first observations of Pluto by NASA’s James Webb Space Telescope (JWST) reveal dramatic phenomena on its surface, like ...

Cheng, together with graduate students from Princeton University, discovered the potential dwarf planet while searching for the elusive “Planet 9”, a hypothetical world believed to cause the unusual ...