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

#PortalSpace Systems says $17.5 million in fresh funding will accelerate the development of its fast-maneuvering #Supernova space vehicle, which will rely on solar thermal propulsion. https://www.geekwire.com/2025/portal-space-systems-raises-17-5m-for-orbital-spacecraft-powered-by-solar-heating/ #Space

What Will the Betelgeuse Supernova Be Like - And Will It Hurt Us?
—@universetoday

｢ It will be visible during the day. It will be brighter than any planet. It will be almost as bright as the full moon. You'll be able to read a book by the light of the Betelgeuse supernova at midnight ｣

https://www.universetoday.com/articles/what-will-the-betelgeuse-supernova-be-like-and-will-it-hurt-us

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

Supernova schuld an zwei von fünf Massenaussterben? Nahe Sternexplosionen könnten Katastrophen im Ordovizium und Devon ausgelöst haben. #Supernova #Massenaussterben #Erdgeschichte #Sternexplosion
https://www.scinexx.de/news/kosmos/supernova-schuld-an-zwei-von-fuenf-massenaussterben/

#ElectroSwing #SongOfTheDay

Swing, Swing, Swing (Supernova remix) by Aaron Und Pascal

https://www.youtube.com/watch?v=RjuE9DfVBJI

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/

If you too want to know when the long awaited recurrent #supernova explosion of T Coronae Borealis happens, well just wait. You didn't miss it, it hasn't happened yet, however pre-eruption started.

Last outbreaks were May 1866 and February 1946, so 2025 is likely. T CrB has two components: a red giant star in close orbit with a white dwarf. Theoretically accumulated mattercould push past the 1.4 solar mass Chandrasekhar Limit, forcing a Type Ia supernova. I would love to see that! #astronomy

Tautumeitas win Supernova 2025 and will fly to Basel! https://www.byteseu.com/727811/ #eurovision #Eurovision2025 #Latvia #LTVSupernova2025 #Supernova

Tautumeitas wins Supernova 2025 – To Eurovision with “Bur man laimi” https://www.byteseu.com/727479/ #Basel2025 #ESC #eurovision #Latvia #LTV #NationalSelections #Supernova #Tautumeitas

Here is my #GoldStar winner from the #constellation #lynx -- NGC 2770

Truly explosive stuff!

Learn more: https://starrytimepodcast.podbean.com/e/cosmic-background-lynx/

While Betelgeuse has displayed some erratic behaviour, it may not be about to go supernova just yet. #astronomy #betelgeuse #supernova

https://blogs.nasa.gov/Watch_the_Skies/2024/09/06/betelgeuse-betelgeuse-betelgeuse-stargazers-wont-see-ghosts-but-supergiant-star-for-spooky-season/

10 acts to the Supernova 2025 Final https://www.byteseu.com/708704/ #Basel2025 #ESC #eurovision #Latvia #LTV #NationalSelections #Supernova

Our new #podcast on the #constellation #Lynx is out now!

This episode features:
A dubious name
A new Johann(es) -- we miss u already Bayer!
Supernova talk

And more!

Listen here: https://mcdn.podbean.com/mf/web/umr5upca6w9vkj2w/S3_E6_LynxCosmic.mp3

Latvia: Supernova 2025 finalists determined https://www.byteseu.com/706838/ #eurovision #Eurovision2025 #Latvia #Supernova #Supernova2025

https://www.europesays.com/1815064/ Latvia: Supernova 2025 finalists determined #eurovision #Eurovision2025 #Jaunumi #latvia #Latvija #Supernova #Supernova2025