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New discoveries of objects in the Kuiper Belt have also presented challenges for the Planet Nine theory. The latest is known ...
The Oort Cloud is a vast, icy shell that surrounds the solar system, marking the farthest reaches of our cosmic neighborhood. Though we have yet to directly observe its objects, the Oort Cloud is ...
A curious, icy and distant object has just been discovered far beyond Pluto. Nicknamed Ammonite, it intrigues astronomers ...
The orbit of Ammonite (red line) and the orbits of the other three sednoids (white lines). Ammonite was discovered close to its perihelion, at a distance of 71 astronomical units (71 times the average ...
A new telescope, built to track fast-moving objects in space, has caught an interstellar comet from beyond the solar system, ...
Harvard astrophysicist Avi Loeb has cowritten a research paper speculating whether the comet 3I/ATLAS is in fact "hostile" ...
Discovered in July 2025, 3I/ATLAS is the third confirmed interstellar visitor traversing our solar system, following ...
Harvard astronomer Avi Loeb suggests we could use NASA's existing Juno spacecraft to intercept the path of interstellar object 3I/ATLAS.