NH Arrokoth (formerly Ultima Thule) Encounter Observations & Results, post-flyby discussion as the data arrives |
NH Arrokoth (formerly Ultima Thule) Encounter Observations & Results, post-flyby discussion as the data arrives |
Jan 4 2019, 01:16 AM
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Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
This will be where we talk about the data as it arrives over the next 20 months or so.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Jan 29 2019, 10:44 PM
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
During Rosetta's 67/P mission, there have been lots of speculations about cometesimals as building blocks. This paper appears to contain some of the according discussion, especially subsection 4.3 about their hierarchical agglomeration.
The paper is referencing a paper about simulations of this mechanism. Here an excerpt of the abstract: QUOTE The size distribution of cometesimals growing by drag-induced collisions develops a narrow peak in the range tens to hundreds of meters. So, there seem to exist size-dependent agglomeration mechanisms with prefered grain sizes. Above some size, gravity between cometesimals should come into relevant play, and we are getting into a rubble pile model. This is just some clue, where to start with. |
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Lo-Fi Version | Time is now: 27th September 2024 - 06:50 AM |
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