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X-ray look at comet 3I/ATLAS reveals brutal clash with solar wind

The third known visitor from interstellar space, comet 3I/ATLAS, is putting on a show that plays out in high‑energy light instead of visible fireworks. As it barrels through the inner solar system, ...
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First ever X-ray of 3I/ATLAS reveals 400,000 km glowing ‘alien halo’

In late November 2025, astronomers captured an unprecedented cosmic signature: the first X-ray emissions ever detected from an interstellar comet. As Comet 3I/ATLAS hurtled through our solar system at ...