Скачать или смотреть Mystery Deepens is 3I/Atlas a Comet, Planet or Something Else?

interstellar comet 3I/ATLAS, discovered on July 1, 2025, actually play a role in planet formation?
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Key facts:

3I/ATLAS was confirmed as an interstellar comet, moving through our Solar System at nearly twice the speed of ‘Oumuamua and Borisov.
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Its estimated nucleus size is ∼5.6 kilometers (about 3.5 miles).
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It has a dusty coma, characteristic of comets.
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While some speculation has included exotic possibilities like alien spacecraft, astrophysicists tend to favor more conventional interpretations.
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But at the Europlanet Science Congress & DPS 2025, Professor Susanne Pfalzner and Michele Bannister put forward a provocative hypothesis: perhaps objects like 3I/ATLAS act as “planet seeds”—pre-formed bodies that, when captured in a protoplanetary disk, accelerate planet formation.
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Why this matters: models of planet formation face challenges, especially around forming big planets quickly before the protoplanetary disk disperses. Disks typically last 1-3 million years, whereas forming large planets by accretion can take much longer under standard conditions.
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Interstellar objects like 3I/ATLAS might help bridge that gap by supplying solid cores early.
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This clip dives into the mystery of 3I/ATLAS: is it simply another fast comet, or something more—a possible cornerstone in how planets are born?

#3IATLAS #PlanetFormation #InterstellarObjects #Astronomy #SpaceScience #ProtoplanetaryDisks #Oumuamua #Borisov

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