NASA4d ago
NASA’s Chandra Reveals Star’s Inner Conflict Before Explosion https://www.nasa.gov/missions/chandra/nasas-chandra-reveals-stars-inner-conflict-before-explosion/ #NASA #ChandraXRayObservatory #General #MarshallAstrophysics #MarshallSpaceFlightCenter #SupernovaRemnants #Supernovae #TheUniverse
NASA's Chandra Reveals Star's Inner Conflict Before Explosion - NASA

The inside of a star turned on itself before it spectacularly exploded, according to a new study from NASA’s Chandra X-ray Observatory. Today, this shattered

NASA
German Virtual ObservatoryAug 22
New in the #VirtualObservatory: “SN 2022lxg light curves” by Charalampopoulos P. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/700/A138
#Supernovae #VisibleAstronomy #SloanPhotometry
VizieR J/A+A/700/A138

VizieR catalogues

German Virtual ObservatoryAug 14
New in the #VirtualObservatory: “ZTF SN Ia DR2. SiII6355 high-velocity comp.” by Harvey L. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/695/A264
#Spectroscopy #Supernovae
VizieR J/A+A/695/A264

VizieR catalogues

NASAAug 12
NASA Roman Core Survey Will Trace Cosmic Expansion Over Time https://www.nasa.gov/missions/roman-space-telescope/nasa-roman-core-survey-will-trace-cosmic-expansion-over-time/ #NASA #NancyGraceRomanSpaceTelescope #DarkEnergy #NeutronStars #Stars #Supernovae #TheUniverse
NASA Roman Core Survey Will Trace Cosmic Expansion Over Time - NASA

NASA’s Nancy Grace Roman Space Telescope will be a discovery machine, thanks to its wide field of view and resulting torrent of data. Scheduled to launch no

NASA
Benjamin Carr, Ph.D. 👨🏻‍💻🧬Aug 6
New evidence that some #supernovae may be a “double detonation”
A hypothesis that doesn't require as much mass: a relatively small explosion on a #whitedwarf's surface can compress the interior enough to restart fusion in #stars that haven't yet reached a critical mass. Now, observations of the remains of a #supernova provide some evidence of the existence of these so-called "double detonation" supernovae.
https://arstechnica.com/science/2025/07/new-evidence-that-some-supernovae-may-be-a-double-detonation/
New evidence that some supernovae may be a “double detonation”

It may be possible to blow up a white dwarf before it reaches a critical mass.

Ars Technica
Show threadKnowledge ZoneAug 6

A mere 55 million light-years away in the Virgo Cluster of Galaxies, M61 is also known as NGC 4303. It's considered to be an example of a barred spiral galaxy similar to our own #MilkyWay.

Messier 61 holds the record for the most #Supernovae observed in any Messier object, with at least eight recorded.

https://en.wikipedia.org/wiki/Messier_61

German Virtual ObservatoryAug 2
New in the #VirtualObservatory: “ZTF hydrogen-rich superluminous supernovae” by Pessi P.J. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/695/A142
#Supernovae #VisibleAstronomy #UltravioletAstronomy #SloanPhotometry
VizieR J/A+A/695/A142

VizieR catalogues

Starry Time PodcastJul 31

This is NGC 1309 -- a spiral galaxy 100 million LY away that #Hubble is keeping its eye on 🔭 👀

📷 :https://esahubble.org/images/potw2530a/

#astrophotography #space #Science #Astronomy #AstroDon #Hubble #SpaceTelescope #NASA #ESA #SpiralGalaxy #Supernovae

German Virtual ObservatoryJul 31
New in the #VirtualObservatory: “SN 2017egm spectroscopic & photometric obs.” by Zhu J. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/949/23
#Supernovae #XRaySources #InfraredAstronomy #Spectroscopy
VizieR J/ApJ/949/23

VizieR catalogues

German Virtual ObservatoryJul 27
New in the #VirtualObservatory: “HST/WFC3 phot. of the S1-SX images of SN Refsdal” by Kelly P.L. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/948/93
#HstPhotometry #Supernovae #GravitationalLensing #InfraredAstronomy
VizieR J/ApJ/948/93

VizieR catalogues