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Astronomy Picture of the Day - Methane Discovered on Distant Exoplanet
NASA ^ | 20 Sep, 2023 | Illustration Credit: Ahmad Jabakenji (ASU Lebanon, North Star Space Art); Data: NASA, ESA, CSA, JWST

Posted on 09/20/2023 2:24:04 PM PDT by MtnClimber

Explanation: Where else might life exist? One of humanity's great outstanding questions, locating planets where extrasolar life might survive took a step forward in 2019 with the discovery of a significant amount of water vapor in the atmosphere of distant exoplanet K2-18b. The planet and its parent star, K2-18, lie about 124 light years away toward the constellation of the Lion (Leo). The exoplanet is significantly larger and more massive than our Earth, but orbits in the habitable zone of its home star. K2-18, although more red than our Sun, shines in K2-18b's sky with a brightness similar to the Sun in Earth's sky. The 2019 discovery of atmospheric water was made in data from three space telescopes: Hubble, Spitzer, and Kepler, by noting the absorption of water-vapor colors when the planet moved in front of the star. Now in 2023, further observations by the Webb Space Telescope in infrared light have uncovered evidence of other life-indicating molecules -- including methane. The featured illustration imagines exoplanet K2-18b on the far right orbited by a moon (center), which together orbit a red dwarf star depicted on the lower left.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: methane; nasa
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To be added or removed from the Astronomy Picture of the Day ping list please send me a request via "Private Reply" (Mail).

For more detail go to the link and click on the image for a high definition image. You can then move the magnifying glass cursor then click to zoom in and click again to zoom out. When zoomed in you can scan by moving the side bars on the bottom and right side of the image.

1 posted on 09/20/2023 2:24:04 PM PDT by MtnClimber
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To: MtnClimber

2 posted on 09/20/2023 2:24:30 PM PDT by MtnClimber (For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
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To: 21stCenturion; 21twelve; 4everontheRight; abb; AFB-XYZ; AFPhys; Agatsu77; America_Right; ...
Pinging the APOD list.

🪐 🌟 🌌 🍔


3 posted on 09/20/2023 2:25:21 PM PDT by MtnClimber (For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
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To: MtnClimber

Can SpaceX go retrieve the methane?


4 posted on 09/20/2023 2:27:33 PM PDT by ProtectOurFreedom (“Occupy your mind with good thoughts or your enemy will fill them with bad ones.” ~ Thomas More)
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To: MtnClimber

Interplanetary cow farts will kill us all.

5.56mm


5 posted on 09/20/2023 2:29:11 PM PDT by M Kehoe (Quid Pro Joe and the Ho have got to go)
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To: MtnClimber

Looks like land and water but no lights on the dark side.


6 posted on 09/20/2023 2:35:36 PM PDT by SkyDancer (If At First You Don't Suceed, Well So Much For Skydiving ~)
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To: MtnClimber

An alien farted


7 posted on 09/20/2023 2:36:32 PM PDT by NWFree (Sigma male 🤪)
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To: MtnClimber

“locating planets where extrasolar life might survive took a step forward”

No, finding one thing that might support life on a planet where that is missing 8 or 9 other elements needed to support life is not taking a step forward. You’re still in the same spot you always were, where Earth is the only planet in the universe known to be capable of supporting life.


8 posted on 09/20/2023 2:37:40 PM PDT by Boogieman
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To: MtnClimber

A fossil fuel?


9 posted on 09/20/2023 2:37:48 PM PDT by mikey_hates_everything
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To: MtnClimber

Methane found on distant exoplanet: climate change “scientists” alarmed


10 posted on 09/20/2023 2:40:01 PM PDT by Secret Agent Man (Gone Galt; not averse to Going Bronson.)
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To: MtnClimber

Argghh ...

That’s not astronomy data ... that’s just some jerkoff’s “impression” of what the exoplanet “might” look like. Utterly worthless, and confusing to non-scientists.


11 posted on 09/20/2023 2:41:08 PM PDT by NorthMountain (... the right of the peopIe to keep and bear arms shall not be infringed)
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To: SkyDancer

See #11


12 posted on 09/20/2023 2:42:11 PM PDT by NorthMountain (... the right of the peopIe to keep and bear arms shall not be infringed)
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To: MtnClimber

13 posted on 09/20/2023 3:09:26 PM PDT by martin_fierro (< |:)~)
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To: Secret Agent Man

Methane found on distant exoplanet: women and minorities hurt the most.


14 posted on 09/20/2023 3:18:19 PM PDT by Verginius Rufus
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To: MtnClimber

Another announcement that gets some people’s hopes up that we finally have found alien life. Not so fast. No one has confirmed life there yet.


15 posted on 09/20/2023 3:37:33 PM PDT by I want the USA back (Democracy dies when you take away from those who work and give to those who won't. Khrushchev.)
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To: NorthMountain

So the planet picture is a fake? Some imaginary image of what it should look like?


16 posted on 09/20/2023 3:48:54 PM PDT by SkyDancer (If At First You Don't Suceed, Well So Much For Skydiving ~)
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To: martin_fierro

He that smelt it, dealt it.


17 posted on 09/20/2023 3:50:18 PM PDT by AFB-XYZ (Two options: 1) Stand up, or 2) Bend over)
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To: MtnClimber

Titan is also covered in methane; it doesn’t mean life.


18 posted on 09/20/2023 3:51:44 PM PDT by Telepathic Intruder
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To: SkyDancer

So the planet picture is a fake? Some imaginary image of what it should look like?

Those are artists renditions of what exoplanets “could” look like. We really can’t see them that close.


19 posted on 09/20/2023 4:21:39 PM PDT by telescope115 (I NEED MY SPACE!!! 🔭)
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To: SkyDancer

THAT picture is an “artist’s conception” of what the planet might look like. The actual data will consist of a handful of pixels imaged through a spectrometer. Very interesting to astronomers, but not particularly exciting for anybody else to look at.


20 posted on 09/20/2023 4:46:43 PM PDT by NorthMountain (... the right of the peopIe to keep and bear arms shall not be infringed)
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