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    microparticle aggregates tagged posts

    To Stick or to Bounce: Size determines the Stickiness of Cosmic Dust Aggregates

    July 25, 2023, Categories  Astronomy/Space

    Micrometer-scale dust particles from protoplanetary disks, or sites around stars with particles and hydrogen and/or other gasses, aggregate to form planetesimals, or kilometer-scale building blocks of planets. Planetesimals, in turn, merge due to mutual gravity. ©JAMSTEC

    Microparticle dust aggregates, which are thought to play a role in the formation of new planets, are less likely to stick together after a collision when the aggregates are larger.

    Current evidence suggests that microparticles of cosmic dust collide and stick together to form larger dust aggregates that may eventually combine and develop into planets...

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