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Corey S Powell
@coreyspowell@mastodon.social  ·  activity timestamp 3 days ago

A hellish world: Planet TOI-561 b, slightly larger than Earth, orbits an ancient, sunlike star so closely that a "year" lasts just 11 hours and its surface is lava. Yet somehow it has a thick atmosphere, hinting at how old, battered planets might rejuvenate themselves.

https://eos.org/articles/a-lava-world-unexpectedly-hosts-an-atmosphere #science #nature #astronomy

Eos

A “Lava World” Unexpectedly Hosts an Atmosphere - Eos

TOI-561 b, an exoplanet roughly 275 light-years away, seems to have a thick atmosphere despite being wildly irradiated by its host star.
The seemingly thick atmosphere of exoplanet TOI-561 b, seen here in an artist’s rendition, is most likely composed of material outgassed from its molten surface. Credit: NASA, ESA, CSA, Ralf Crawford (STScI)
The seemingly thick atmosphere of exoplanet TOI-561 b, seen here in an artist’s rendition, is most likely composed of material outgassed from its molten surface. Credit: NASA, ESA, CSA, Ralf Crawford (STScI)
The seemingly thick atmosphere of exoplanet TOI-561 b, seen here in an artist’s rendition, is most likely composed of material outgassed from its molten surface. Credit: NASA, ESA, CSA, Ralf Crawford (STScI)
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हिति , in Nepāl Bhāṣā, is the word for a shared community water tap. Even in modern Newar cities, these ancient structures still pour out fresh mountain water piped through ancient underground filters and conduits. They are a place to wash, to talk, to drink, to meet the locals: a nourishing, refreshing social-ecological place.

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