If there is a black hole, it's at least 20 times farther from Earth than the furthest planet, Neptune, in a distant region of our solar system called the extended Kuiper Belt. The belt is home to ...

For many years scientists have been wondering if a mysterious ninth planet lurks in our Solar system ... Either classification would leave it unique (like this black hole in the solar system which is ...

The scientists think that the yet unseen ninth planet may be a “rogue,” which entered out solar system not at its inception, but long after the fact. The theory of Planet Nine was born out of ...

How do we know that was caused by a passing black hole? The solar system is a busy place, packed with planets, moons, dwarf planets, asteroids, and comets. The mini-tweaks that the Earth ...

However, this year a powerful new telescope is coming online that could prove once and for all that there really is a ninth planet in our Solar System. The same year that Pluto was ignominiously ...

Ironically, Brown played a major role in Pluto being declassified as a ninth ... release that Planet 9 has 5,000 times the mass of Pluto. The largest planet in the solar system, Jupiter ...

Our solar system has eight planets but in recent years, astronomers have theorised there could well be a ninth planet that's hiding in our solar system we've not been able to see yet.

An curved arrow pointing right. Astronomers say they've discovered a ninth planet 200 times farther from the Sun than Earth. Produced by Emmanuel Ocbazghi. Original Reporting by Jessica Orwig.

An elusive Earth-like planet in our solar system could finally be discovered ... Some experts believe "it isn’t even a planet, but a primordial black hole" and other astronomers are convinced ...