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 hundreds ...
The original Planet 9 puzzle: strange orbits and a bold claim The modern Planet 9 saga began when a cluster of small, icy bodies far beyond Neptune appeared to be moving in lockstep, as if shepherded ...
If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth. When you purchase through links on our site, we may earn an affiliate ...
Fast-moving objects like interstellar comet 3I/ATLAS may be planet-forming seeds, potentially helping to solve an old Solar System mystery. On July 1, 2025, astronomers spotted an object moving ...
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