#rochelimit — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #rochelimit, aggregated by home.social.
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@NanoRaptor
#SciFi : Ken Macleod's Learning the World with the advancing wave of green stars points up the idea that the Dyson sphere is less a solid structure than an accumulation of habitats, machines etc.
(Sphere might not be the shape either)
Larry #Niven's #NeutronStar short story points up one problem of near-point masses, tidal forces. One's personal #RocheLimit is best avoided.
Niven again, and the #SmokeRing and #IntegralTrees is interesting wrt a neutron star and habitability. -
Earth May Have Had A Ring System 466 Million Years Ago
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https://phys.org/news/2024-09-earth-million-years.html <-- shared technical article
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https://doi.org/10.1016/j.epsl.2024.118991 <-- shared paper
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“HIGHLIGHTS:
• Earth may have had a ring during the middle Ordovician, from ca. 466 Ma.
• Breakup of an asteroid passing within Earth's Roche limit likely formed the ring.
• Among several features preserved is a near-equatorial band of impact craters.
• Shading of Earth by the ring may have triggered a global icehouse period…”
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#GIS #spatial #mapping #model #modeling #geology #structuralgeology #planetarygeology #rings #climatechange #paleoclimate #Ordovician #asteroid #rochelimit #craters #impactcrater #crater #icehouse #meteorite #platetectonics #HirnantianIcehouse