Astronomy Picture of the Day ·

Chandra's First Light: Cassiopeia A

The Astronomy Picture of the Day for August 27, 1999 is “Chandra's First Light: Cassiopeia A,” an image. It is credited to Credit Chandra X-ray Observatory, NASA. The original explanation runs about 164 words.

Chandra's First Light: Cassiopeia A
Credit Chandra X-ray Observatory, NASA Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“Cosmic wreckage from the detonation of a massive star is the subject of this official first image from NASA’s Chandra X-ray Observatory . The supernova remnant, known as Cassiopeia A , was produced when a star exploded around 300 years ago in this northern sky constellation .”

— APOD editors, August 27, 1999

Read the full explanation on science.nasa.gov

At a glance

Date
August 27, 1999
Type
Image
Credit
Credit Chandra X-ray Observatory, NASA
Copyright
No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length
About 164 words

All of August 1999 → · 1999 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 27 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.