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Astronomy Picture of the Day - CG 4: The Globule and the Galaxy
NASA ^ | 11 Mar, 2026 | Image Credit & Copyright: William Vrbasso Text: Cecilia Chirenti (NASA GSFC, UMCP, CRESST II)

Posted on 03/11/2026 11:01:41 AM PDT by MtnClimber

Explanation: Is this a cosmic monster ready to devour an unsuspecting galaxy? Thankfully, that is not the case. The red “monster” shown in the featured image is Cometary Globule CG 4, 1,300 light-years away in the Constellation Puppis. CG 4 is a molecular cloud, where hydrogen becomes cold enough to form molecules that can be brought together by gravity to create stars. The shape of CG 4 resembles that of a comet, but its head is 1.5 light-year in diameter and its tail is 8 light-years long; for comparison, the distance from the Earth to the sun is only 8 light-minutes. Astronomers believe that the tail of a cometary globule could have been shaped by a nearby supernova explosion or by irradiation from hot, massive stars. Indeed, CG 4 and other nearby globules point away from the Vela Supernova Remnant, at the center of the Gum Nebula. The edge-on spiral galaxy, ESO 257-19, is more than a hundred million light-years beyond CG 4, and is completely safe from the “monster”.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; nasa
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1 posted on 03/11/2026 11:01:41 AM PDT by MtnClimber
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To: MtnClimber

2 posted on 03/11/2026 11:02:02 AM PDT by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
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To: 21stCenturion; 21twelve; 4everontheRight; A Navy Vet; A_perfect_lady; abb; AFB-XYZ; AFPhys; ...
Pinging the APOD list

🪐 🌟 🌌 🍔

3 posted on 03/11/2026 11:02:48 AM PDT by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
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To: MtnClimber

That galaxy is Globule food.


4 posted on 03/11/2026 11:51:53 AM PDT by DannyTN
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To: MtnClimber

Remember that Star Trek episode where that planet killer that looked like a cornucopia threatened the Enterprise? Kinda looked like that🤓


5 posted on 03/11/2026 12:25:43 PM PDT by NavyShoe
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To: MtnClimber

Remember that Star Trek episode where that planet killer that looked like a cornucopia threatened the Enterprise? Kinda looked like that🤓


6 posted on 03/11/2026 12:25:43 PM PDT by NavyShoe
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To: MtnClimber

7 posted on 03/11/2026 12:30:57 PM PDT by Deaf and Discerning
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To: MtnClimber

Wow.


8 posted on 03/11/2026 12:35:04 PM PDT by No name given ( Anonymous is who you’ll know me as )
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To: MtnClimber

An amazing picture.


9 posted on 03/11/2026 3:14:24 PM PDT by telescope115 (Ad Astra, Ad Deum…)
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