https://www.europesays.com/2012695/ Bothell company creates innovative new space vehicle #JeffThornburg #MultiRole #nasa #PortalSpaceSystems #space #SpaceRace #SpaceSuperiority #SpaceVehicle #Supernova

We talked about Cassiopeia A (Cas A) during our #Astronomy episode on #cassiopeia here: https://starrytimepodcast.podbean.com/e/cassiopeia-cosmic-background/

And, gotta say, this 3D rendering does not disappoint!!!

#AstroDon #Space #Science #Chandra #Supernova #Astro #JWST #Webb #NASA

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

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

#Astronomy #Supernova #Telescopes #ObservableUniverse

That's astonishing. I always thought a supernova is a one-in-a-century kind of thing. Until I read this blog post by an astronomer:
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

#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

 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

#DarkEnergy weakening? Must be because certain Death Eaters have sucked up all the darkness of the #Universe ...
serious #science though, coming from #Euclid mission and #supernova measurements:

https://www.theguardian.com/science/2025/mar/19/dark-energy-mysterious-cosmic-force-weakening-universe-expansion #cosmology

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

https://www.europesays.com/1902078/ Hubble Space Telescope Spies NGC 4900 #ESA #galaxy #hubble #nasa #NGC4753Group #NGC4900 #SN1999br #space #SpiralGalaxy #Supernova

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

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

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