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    Erdähnlicher Exoplanet LHS 1140b könnte eine Atmosphäre haben – künstlerische Darstellung


    Erdähnlicher Exoplanet LHS 1140b könnte eine Atmosphäre haben – künstlerische Darstellung

    https://i.redd.it/n8a1fox8qknd1.png

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    11 Comments

    1. Vleider_1899 on

      I made my impression of LHS 1140b (on the left in the picture) compared to Earth (photo is on the right).

      James Webb Space Telescope detected potential indications of LHS 1140b to have in its atmosphere nitrogen, water vapor, and carbon dioxide, and that the surface of the planet might be mostly ice and partially covered in liquid water.

      If this detection could be verified, it would be the first evidence of a secondary atmosphere around a potentially habitable exoplanet.

      Although it is imaged usually as an eyeball, I believe such planets may tend to have at least slow rotation, especially when there are other planets in the system (there is at least a second one in this system), thus the planet on my image has some mix of water ice, water clouds, and thick air which looks bluish.

      Credit: NASA, vleider

    2. Cool-Frame-750 on

      Not a scientist so excuse the stupid question. Does the size of the planet affect the gravitational pull . ? How does pressure work ? So in the deep ocean the pressure is measured by weight. Does that work on atmosphere as well?

    4. brihamedit on

      If a habitable planet is much larger than earth, gravity would be very different right? So people can’t live there. What if gravity is much higher, people won’t be able to live there

    5. UnconsciousUsually on

      So what? You’d weight at least twice your Earth weight.

    6. HelioCollis on

      I would prefer a scientist impressions. Artists may think you can live on pure light for what I know!

    7. DreamChaserSt on

      This is one of the more enticing discoveries so far. TRAPPIST-1 hasn’t had much news around its potentially habitable worlds so far, and K2-18b might be a mini gas giant, an ocean can still be ruled out. LHS 1140b so far looks terrestrial, and could have a surface (even if its surface is ice), with an atmosphere more similar to Earth than the ice giants.

      And there is value in studying these planets for astrobiology purposes even if it’s not “Earth-like”, to find the limits of terrestrial planets and habitability.

    8. don-again on

      Well, if it were LV-426 all we’d need it Weyland-Yutani to send some colonists to process that atmosphere a bit.

    9. Decronym on

      Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I’ve seen in this thread:

      |Fewer Letters|More Letters|
      |——-|———|—|
      |ETOV|Earth To Orbit Vehicle (common parlance: “rocket”)|
      |[H2](/r/Space/comments/1fbvyii/stub/lm516k3 “Last usage”)|Molecular hydrogen|
      | |Second half of the year/month|
      |[LV](/r/Space/comments/1fbvyii/stub/lm4w184 “Last usage”)|Launch Vehicle (common parlance: “rocket”), see ETOV|

      **NOTE**: Decronym for Reddit is no longer supported, and Decronym has moved to Lemmy; requests for support and new installations should be directed to the Contact address below.

      —————-
      ^(2 acronyms in this thread; )[^(the most compressed thread commented on today)](/r/Space/comments/1fayfch)^( has 16 acronyms.)
      ^([Thread #10553 for this sub, first seen 8th Sep 2024, 16:55])
      ^[[FAQ]](http://decronym.xyz/) [^([Full list])](http://decronym.xyz/acronyms/Space) [^[Contact]](https://hachyderm.io/@Two9A) [^([Source code])](https://gistdotgithubdotcom/Two9A/1d976f9b7441694162c8)

    10. Osiris_Raphious on

      So… fan art/speculation isn’t against rules?

      “Not Allowed

      Sensationalized/misleading titles or Unscientific content”

      This should have been a link to a paper or analysis article. But I guess fan art is as good as anything. And yes, most ‘artist’ interpretation has no real validity, as we only really have clear pictures of planets in our solar system.

    11. Natural_Intention_68 on

      At 49 light years away, what would it take to get there with the current technology we have…. A Million Years?!?!

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