It has been doing this for months, but is expected to go supernova sometime in the near future, likely this year. It's a view from a Celestron at 1000x resolution.

Ignore his "prediction." If you're lucky, you'll be watching.

https://www.youtube.com/watch?v=OwsmWyWWRoo

This is Cygnus Loop -- a #supernova remnant located in the #constellation Cygnus

For more on the #astronomy of this constellation, check out: https://starrytimepodcast.podbean.com/e/cygnus-cosmic-background/

For the bittersweeet #LGBTQIA love story of the constellation Cygnus: https://starrytimepodcast.podbean.com/e/cygnus-myths-and-retconstellations/

And for fun facts on *actual* swans: https://starrytimepodcast.podbean.com/e/asterism-swan-creature-corner/

:https://chandra.harvard.edu/photo/2025/3dmodels/more.html

Beautiful emission #nebula NGC 6164 was created by a rare, hot, luminous O-type #star, some 40 times as massive as the Sun.

Seen at the center of the cosmic cloud, the star is a mere 3 to 4 million years old. In another three to four million years the massive star will end its life in a #supernova explosion.

#astronomy #astrophotography
https://apod.nasa.gov/apod/ap250424.html

Normal people: Let's count in base 10
Computer scientists: Let's count in base 2
Astronomers: Let's count in base 26!

#astrodon #astronomy #supernova

https://badastronomy.beehiiv.com/p/ban-447-wait-how-many-supernova-explode

A super-Chandrasekhar mass type Ia #supernova progenitor at 49 pc set to detonate in 23 Gyr: https://www.nature.com/articles/s41550-025-02528-4 -> Warwick astronomers discover doomed pair of spiralling stars on our cosmic doorstep: https://warwick.ac.uk/newsandevents/pressreleases/warwick_astronomers_discover

https://scicomm.xyz/@cosmos4u/114282230745310485

A super-Chandrasekhar mass type Ia #supernova progenitor at 49 pc set to detonate in 23 Gyr: https://www.nature.com/articles/s41550-025-02528-4 -> Warwick astronomers discover doomed pair of spiralling stars on our cosmic doorstep: https://warwick.ac.uk/newsandevents/pressreleases/warwick_astronomers_discover

 New header picture 

It shows the two supernova remnants Cassiopeia A (left, in X-rays) and Vela Jr. (right, at radio wavelengths). Both harbor a “central compact object”, a neutron star left behind together with the debris cloud after the supernova.

Researchers from the permanent independent @maxplanckgesellschaft research group “Continuous Gravitational Waves” at @mpi_grav in Hanover, Germany, have been searching for gravitational waves from these central compact objects using the volunteer distributed computing project @einsteinathome.

https://arxiv.org/abs/2503.09731

The fact that they did not find any gravitational waves indicates that the neutron stars can only be minimally deformed.

https://www.aei.mpg.de/1188233/digging-deeper-with-einstein-home?c=26149

Images: http://snrcat.physics.umanitoba.ca/SNRrecord.php?id=G111.7m02.1 and http://snrcat.physics.umanitoba.ca/SNRrecord.php?id=G266.2m01.2

 Neues Header-Bild 

Es zeigt die beiden Supernova-Überreste Cassiopeia A (links, im Röntgenbereich) und Vela Jr. (recht, im Radiobereich). Beide beherbegen ein „zentrales kompaktes Objekt“, einen Neutronenstern, der mit der Explosionswolke nach der Supernova zurückblieb.

Forschende der dauerhaften unabhängigen @maxplanckgesellschaft Forschungsgruppe „Kontinuierliche Gravitationswellen“ am @mpi_grav in Hannover haben mit dem verteilten Rechenprojekt @einsteinathome nach Gravitationswellen von diesen zentralen kompakten Objekten gesucht.

https://arxiv.org/abs/2503.09731

Dass sie keine Gravitationswellen gefunden haben, verrät, dass die Neutronensterne nur minimal verformt sein können.

https://www.aei.mpg.de/1188233/digging-deeper-with-einstein-home?c=26149

Bilder: http://snrcat.physics.umanitoba.ca/SNRrecord.php?id=G111.7m02.1 bzw. http://snrcat.physics.umanitoba.ca/SNRrecord.php?id=G266.2m01.2

Hobby update!

Last week some clear nights; and with my second set I didn’t knew what to target and shoot. So kinda was hopping around and found this very very very faint target. Didn’t knew what it was; had to look it up.

Ultimately I had to do 600 second and 1200 second subs. Yeah. That’s 20 minutes for one shot. And that a challenge I didn’t tackle before.

But. Here she is: CTB-1 Supernova remnant in HOO (Garlic Nebula)

William Optics RedCat 61 WIFD
ZWO AM3, ZWO EAF, ZWO ASI 120MM mini, ASIAir Pro
69x 600" @ Gain 252 -10c
21x1200" @ Gain 252 -10c
20 Flats + darkflats
40 Darks (600/1200")

A census of OB stars within 1 kpc and the star formation and core collapse #supernova rates of the #MilkyWay: https://academic.oup.com/mnras/article/538/3/1367/8024142?login=false -> Violent supernovae 'triggered at least two Earth #extinctions': https://ras.ac.uk/news-and-press/research-highlights/violent-supernovae-triggered-least-two-earth-extinctions

Keele University and Universidad de Alicante #astronomers believe a #supernova explosion close to #Earth could be to blame for both the Late Devonian and Ordovician #extinction events, which occurred 372 and 445 million years ago respectively.

https://www.sci.news/astronomy/nearby-supernova-explosions-mass-extinctions-13746.html

In addition to all the other things going on right now, I am enjoying several days of shift on the #HALO supernova early warning project.

There have been no early warnings, since I took over shift, of a #supernova … for the record.

But the team continues to keep the detector running with high uptime as we patiently wait for the next galactic detonation of a heavy dying star!

Scientists uncover mysterious radioactive concentration beneath Pacific Ocean. The anomaly’s age is around ten million years.
https://www.news-cafe.eu/?go=news&n=13546
#news ##science #research #environment #climatechange #study #nature #habitat #radioactive #nuclear #history #supernova

Recent observations of white dwarf supernovae are shedding light on dark energy and cosmic mysteries. These stellar explosions, known as Type Ia supernovae, have been pivotal in understanding the universe's accelerated expansion. New insights into their diversity and mechanisms could refine our knowledge of dark energy and the cosmos.

@goodnews

#GoodNews #Astronomy #DarkEnergy #Supernova #CosmicMysteries
https://thedebrief.org/white-dwarf-supernovae-may-hold-the-key-to-dark-energy-and-unresolved-cosmic-mysteries/

Have this friend who is newish to #astrophotography here in Sydney. He did 40-hour mosaic on the Vela Supernova remnant in h-alpha/[O-III] …. And holy heck it is incomprehensibly magnificent!

Those are exploded star gutz. At its heart is the Vela pulsar.

Elfie is awesome and you should follow his recent immersion and obviously very good work in astrophotography.

His Instagram is here: https://www.instagram.com/elfn8r?igsh=MWV3aWRrN3VuNDFkdg==

Shared with permission.

David Elford

Tracing the Propagation of Shocks in the Equatorial Ring of SN 1987A over Decades with the Hubble Space Telescope: https://iopscience.iop.org/article/10.3847/1538-4357/ad812e -> Evolution of a #Supernova Ring: https://aasnova.org/2025/02/10/featured-image-evolution-of-a-supernova-ring/

YES! TAUTUMEITAS WILL REPRESENT LATVIA IN BASEL

Supernova results from Latvia about to start

I haven't listened to the Supernova songs beforehand and I've not seen most of the show because UMK but Tautumeitas – “Bur man laimi“ is extraordinary.