Astronomy Picture of the Day ·

Cassiopeia A in a Million

The Astronomy Picture of the Day for August 26, 2004 is “Cassiopeia A in a Million,” an image. It is credited to Credit: U. Hwang ( GSFC /UMD), J.M. Lamming (NRL), et al., CXC , NASA ,. The original explanation runs about 149 words.

Cassiopeia A in a Million
Credit: U. Hwang ( GSFC /UMD), J.M. Lamming (NRL), et al., CXC , NASA , Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“One million seconds of x-ray image data were used to construct this view of supernova remnant Cassiopeia A, the expanding debris cloud from a stellar explosion.”

— APOD editors, August 26, 2004

Read the full explanation on science.nasa.gov

At a glance

Date
August 26, 2004
Type
Image
Credit
Credit: U. Hwang ( GSFC /UMD), J.M. Lamming (NRL), et al., CXC , NASA ,
Copyright
No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length
About 149 words

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

Topics in this entry

Supernovae

Topics are matched from words in the title and explanation.

On this day: August 26 in other years

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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.