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Astronomy Picture of the Day - Shells and Arcs around Star CW Leonis
NASA ^
| 17 Jul, 2023
| Image Credit: ESA, NASA, Hubble, T. Ueta (U. Denver), H. Kim (KASI)
Posted on 07/17/2023 12:06:37 PM PDT by MtnClimber
Explanation: What's happening around this star? No one is sure. CW Leonis is the closest carbon star, a star that appears orange because of atmospheric carbon dispersed from interior nuclear fusion. But CW Leonis also appears engulfed in a gaseous carbon-rich nebula. What causes the nebula's complexity is unknown, but its geometry of shells and arcs are surely intriguing. The featured image by the Hubble Space Telescope details this complexity. The low surface gravity of carbon stars enhances their ability to expel carbon and carbon compounds into space. Some of this carbon ends up forming dark dust that is commonly seen in the nebulas of young star-forming regions and the disks of galaxies. Humans and all Earth-based life are carbon-based, and at least some of our carbon was likely once circulating in the atmospheres of near-death stars like carbon stars.
TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: nasa
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.
To: MtnClimber
2
posted on
07/17/2023 12:06:59 PM PDT
by
MtnClimber
(For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
To: 21stCenturion; 21twelve; 4everontheRight; abb; AFB-XYZ; AFPhys; Agatsu77; America_Right; ...
Pinging the APOD list.
🪐 🌟 🌌 🍔
3
posted on
07/17/2023 12:07:35 PM PDT
by
MtnClimber
(For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
To: MtnClimber
Dave......Dave, what are you doing?
To: Ronaldus Magnus III
Hal 9000, please press
5
posted on
07/17/2023 12:16:57 PM PDT
by
MtnClimber
(For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
To: MtnClimber
Hal 9000, please press [CTRL] [ALT] [DELETE]
6
posted on
07/17/2023 12:18:07 PM PDT
by
MtnClimber
(For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
To: MtnClimber
We live in a truly wild and whacky universe!
So much has not yet been explained / discovered / made sense of!!
Inexplicable-ness rules the day.
To: MtnClimber
8
posted on
07/17/2023 12:23:42 PM PDT
by
No name given
(Anonymous is who you’ll know me as)
To: MtnClimber
9
posted on
07/17/2023 12:27:03 PM PDT
by
Red Badger
(Homeless veterans camp in the streets while illegal aliens are put up in hotels.....................)
To: MtnClimber
10
posted on
07/17/2023 12:29:31 PM PDT
by
Red Badger
(Homeless veterans camp in the streets while illegal aliens are put up in hotels.....................)
To: MtnClimber
Reminds me of oncoming headlights in heavy fog.
11
posted on
07/17/2023 12:31:08 PM PDT
by
reed13k
(For evil to triumph it is only necessary that good men do nothing)
To: Red Badger
That is like the "Time Tunnel" TV show:
12
posted on
07/17/2023 12:31:10 PM PDT
by
MtnClimber
(For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
To: MtnClimber
Which was basically a precursor to the Quantum Leap Series..................and now the new QL..............
13
posted on
07/17/2023 12:32:53 PM PDT
by
Red Badger
(Homeless veterans camp in the streets while illegal aliens are put up in hotels.....................)
To: Red Badger
14
posted on
07/17/2023 12:53:48 PM PDT
by
F450-V10
To: F450-V10
15
posted on
07/17/2023 12:55:06 PM PDT
by
F450-V10
To: Ronaldus Magnus III
16
posted on
07/17/2023 1:12:21 PM PDT
by
FroggyTheGremlim
(I'll be good, I will, I will!)
To: MtnClimber
17
posted on
07/17/2023 1:24:35 PM PDT
by
null and void
(Conspiracies so outlandish they can't be true, but it turns out that they are.)
To: MtnClimber
Aliens trying to hypnotize us.
18
posted on
07/20/2023 1:29:21 AM PDT
by
minnesota_bound
(Need more money to buy everything now)
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