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A curious, icy and distant object has just been discovered far beyond Pluto. Nicknamed Ammonite, it intrigues astronomers ...
Earlier this year, astronomers spotted a mysterious interstellar object, dubbed 3I/ATLAS, hurtling through the solar system ...
Their strange movements don’t match the predictions of current solar system models. This odd behavior has sparked new theories, including the bold idea that a yet-undiscovered Earth-sized planet ...
Astronomers have discovered a "fossil" world lying in the outskirts of the solar system, according to new research.
New simulations suggest that up to four of the solar system's rocky planets, including Earth and a long-lost world, once ...