A mysterious, small and cold object seen 20 billion miles from Earth by astronomers in 1983 may have been the elusive Planet Nine, according to a new report. Astronomers have speculated over the ...

Andrew Griffin October 6, 2023 at 10:41 AM An artist’s impression of a Kuiper Belt object (KBO), located on the outer rim of our solar system (Nasa) ...

Our solar system may have a ninth planet after all, researchers say. The possibility that an additional planet may be hidden far into the solar system was touted more than a century ago. But ...