Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Astronomy Picture of the Day - The Cranium Nebula from the Webb Telescope
NASA ^ | 9 Mar, 2026 | Image Credit: NASA, ESA, CSA, STScI; Processing: J. DePasquale (STScI)

Posted on 03/09/2026 2:26:02 PM PDT by MtnClimber

Explanation: What's going on inside the head of this nebula? Dubbed the Exposed Cranium Nebula for its similarity to the human brain, what created the nebula remains a mystery. One thought is that the Cranium Nebula, also known as PMR 1, is a planetary nebula surrounding a white dwarf star. In this mode, the outer atmosphere was expelled when the original Sun-like star ran out of central nuclear fuel and contracted. A competing thought is that the central star is much more massive, possibly a Wolf-Rayet star, that is ejecting gas and dust via turbulent stellar winds. Adding to the intrigue is the dark vertical central division and the thin outer gaseous shell. The featured image was taken by the Webb Space Telescope in mid- infrared light, while a second image, included as a rollover, is in near-infrared. Future observations may reveal if this brainy system will quietly just fade from view or, many years from now, suddenly erupt in a powerful supernova.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; nasa
Message from Jim Robinson:

Dear FRiends,

We need your continuing support to keep FR funded. Your donations are our sole source of funding. No sugar daddies, no advertisers, no paid memberships, no commercial sales, no gimmicks, no tax subsidies. No spam, no pop-ups, no ad trackers.

If you enjoy using FR and agree it's a worthwhile endeavor, please consider making a contribution today:

Click here: to donate by Credit Card

Or here: to donate by PayPal

Or by mail to: Free Republic, LLC - PO Box 9771 - Fresno, CA 93794

Thank you very much and God bless you,

Jim

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 03/09/2026 2:26:02 PM PDT by MtnClimber
[ Post Reply | Private Reply | View Replies]

To: MtnClimber

2 posted on 03/09/2026 2:26:32 PM PDT by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: MtnClimber

Exposed Cranium Nebula

Perfect name for it.


3 posted on 03/09/2026 2:27:21 PM PDT by BenLurkin (The above is not a statement of fact. It is opinion or satire. Or both.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: 21stCenturion; 21twelve; 4everontheRight; A Navy Vet; A_perfect_lady; abb; AFB-XYZ; AFPhys; ...
Pinging the APOD list

🪐 🌟 🌌 🍔

4 posted on 03/09/2026 2:28:31 PM PDT by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: MtnClimber
"Your cranium nebula called. It has some space to rent."


5 posted on 03/09/2026 2:51:29 PM PDT by Larry Lucido (Donate! Don't just post clickbait.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: MtnClimber

6 posted on 03/09/2026 3:25:05 PM PDT by DannyTN
[ Post Reply | Private Reply | To 1 | View Replies]

To: MtnClimber

Funny how ‘Nature’ continually replicates herself. It’s as if it was all ‘designed’ for our pleasure! ;)


7 posted on 03/09/2026 4:03:30 PM PDT by Diana in Wisconsin (I don't have, 'Hobbies.' I'm developing a robust Post-Apocalyptic skill set.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: Diana in Wisconsin

8 posted on 03/09/2026 5:33:29 PM PDT by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
[ Post Reply | Private Reply | To 7 | View Replies]

To: MtnClimber

9 posted on 03/09/2026 6:07:10 PM PDT by Deaf and Discerning
[ Post Reply | Private Reply | To 1 | View Replies]

To: Deaf and Discerning
or...

- Caution: Cognitive emissions may ionize nearby dust clouds. Viewer discretion advised.

- When your internal monologue develops its own stellar wind and begins eroding the furniture.

- WARNING: Neural luminosity exceeds safe operating thresholds. Maximum shields and warp 10.

10 posted on 03/09/2026 6:43:15 PM PDT by Deaf and Discerning
[ Post Reply | Private Reply | To 9 | View Replies]

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson