Astronomy Picture of the Day ·

A Supernova in Nearby Galaxy NGC 2403

The Astronomy Picture of the Day for September 7, 2004 is “A Supernova in Nearby Galaxy NGC 2403,” an image. It is credited to Credit: A. V. Filippenko ( UC Berkeley ), P. Challis ( Harvard CfA ), et al. , ESA , NASA. The original explanation runs about 143 words.

A Supernova in Nearby Galaxy NGC 2403
Credit: A. V. Filippenko ( UC Berkeley ), P. Challis ( Harvard CfA ), et al. , ESA , NASA Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“The closest and brightest supernova in over a decade was recorded just over a month ago in the outskirts of nearby galaxy NGC 2403. Officially tagged SN 2004dj , the Type IIP explosion likely annihilated most of a blue supergiant star as central fusion could no longer hold it up .”

— APOD editors, September 7, 2004

Read the full explanation on science.nasa.gov

At a glance

Date
September 7, 2004
Type
Image
Credit
Credit: A. V. Filippenko ( UC Berkeley ), P. Challis ( Harvard CfA ), et al. , ESA , NASA
Copyright
No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length
About 143 words

All of September 2004 → · 2004 by month → · Full archive since 1995 →

Topics in this entry

GalaxiesSupernovae

Topics are matched from words in the title and explanation.

On this day: September 7 in other years

On Amazon

Popular picks for space fans

As an Amazon Associate I earn from qualifying purchases.

Electronics Amazon Kindle Paperwhite Signature Edition 32GB Read astronomy and space-history books anywhere. View on Amazon → Electronics Bose QuietComfort Wireless Headphones Noise-cancelling headphones for documentaries and launch livestreams. View on Amazon →

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.