This diagram compares the size of the icy, solid nucleus of comet C/2014 UN271 (Bernardinelli-Bernstein) to several other comets. The majority of comet nuclei observed are smaller than Halley’s comet.
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Newly visible, city-size 'green comet' will soon be ejected into interstellar space — just like 3I/ATLAS
Comet WierzchoÅ›, also known as C/2024 E1, is rapidly brightening as it approaches its closest point to Earth next week. But ...
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