"We were doing the typical planet vetting, and I happened to spot this signal that appeared very unusual." To date, astronomers have uncovered around 6,000 planets, according to Discovery Magazine.

Editor’s Note: Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A Jupiter-like planet located ...

What just happened? A newly identified object spotted in two infrared sky surveys may be the most substantial evidence for the elusive Planet Nine – a potential Neptune-sized world orbiting ...