Learn more about a sednoid called Ammonite that has been detected in the outer reaches of the Solar System.

We still don't know for sure if there's a ninth planet in our solar system, but a new discovery could help to prove that ...

Analysis of an ancient meteorite suggests that rocky planets both near and distant from the sun may have formed at the same ...

KQ14, nicknamed "Ammonite", was discovered using the Subaru Telescope and is a highly elliptical object with a perihelion and ...

In the icy, dark expanse beyond Neptune, a cosmic fossil has surfaced that threatens to upset decades-old assumptions about the solar system’s secret structure. The new discovery of “Ammonite,” a ...