Astronomy Picture of the Day ·

SN Encore: A Second Supernova Seen Several Times

The Astronomy Picture of the Day for October 7, 2025 is “SN Encore: A Second Supernova Seen Several Times,” an image. It is credited to Images Credit: Webb (main): NASA , ESA , CSA , STScI , J. Pierel ( STScI ) & A. Newman ( Carnegie Inst. for Science ); Hubble (rollover): NASA , ESA , STScI , S. A. Rodney ( U. South Carolina ) & G. Brammer ( NBI, U. Copenhagen ). The original explanation runs about 154 words.

An image shows a cluster of galaxies with unusual arcs. The arcs are background galaxies distorted by the gravitational lens effect of the foreground cluster. The background galaxy shows several spots that are supernovas occurring in the ga
Credit: Images Credit: Webb (main): NASA , ESA , CSA , STScI , J. Pierel ( STScI ) & A. Newman ( Carnegie Inst. for Science ); Hubble (rollover): NASA , ESA , STScI , S. A. Rodney ( U. South Carolina ) & G. Brammer ( NBI, U. Copenhagen ) Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“Now a second supernova in this same galaxy is repeating. The cause is the gravitational lens effect of a massive foreground cluster of galaxies (MACS J0138) — it creates multiple images of a perfectly aligned background galaxy (MRG-M0138).”

— APOD editors, October 7, 2025

Read the full explanation on science.nasa.gov

At a glance

Date
October 7, 2025
Type
Image
Credit
Credit: Images Credit: Webb (main): NASA , ESA , CSA , STScI , J. Pierel ( STScI ) & A. Newman ( Carnegie Inst. for Science ); Hubble (rollover): NASA , ESA , STScI , S. A. Rodney ( U. South Carolina ) & G. Brammer ( NBI, U. Copenhagen )
Copyright
No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length
About 154 words

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Topics in this entry

GalaxiesSupernovae

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Source

Copy taken Oct 28, 2026, 2:39 AM EDT. The image and explanation belong to their creators. OpenOrbit is not affiliated with or endorsed by NASA.