Astronomers spot possible Planet Nine in data spanning 23 years

In a groundbreaking development, astronomers may have spotted the elusive Planet Nine, a hypothetical world lurking in the outer reaches of our solar system. Using archival data from two infrared sky surveys conducted 23 years apart, a team led by Terry Long Phan of Taiwan's National Tsing Hua University identified a faint dot that moved consistently with Planet Nine's predicted orbit.

The object's brightness suggests it could be more massive than Neptune, surprising researchers who expected a super-Earth-sized body. Its unusual orbit, swinging from 280 to 1,120 astronomical units from the Sun, raises questions about its origin.

"One possibility is that Planet Nine formed closer to the sun... and was later gravitationally scattered outward by one or more of these giant planets during the early days of the solar system," Phan explained.

While the discovery remains tentative, it represents the most compelling evidence yet for Planet Nine's existence. Astronomers now aim to confirm its identity using powerful telescopes and upcoming space missions.