Astronomy Picture of the Day ·

Recycling Cassiopeia A

The Astronomy Picture of the Day for January 23, 2021 is “Recycling Cassiopeia A,” an image. It is credited to Image Credit: X-ray – NASA , CXC, SAO ; Optical – NASA,STScI. The original explanation runs about 206 words.

Recycling Cassiopeia A
Credit: Image Credit: X-ray – NASA , CXC, SAO ; Optical – NASA,STScI Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“Massive stars in our Milky Way Galaxy live spectacular lives. Collapsing from vast cosmic clouds, their nuclear furnaces ignite and create heavy elements in their cores.”

— APOD editors, January 23, 2021

Read the full explanation on science.nasa.gov

At a glance

Date
January 23, 2021
Type
Image
Credit
Credit: Image Credit: X-ray – NASA , CXC, SAO ; Optical – NASA,STScI
Copyright
No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length
About 206 words

All of January 2021 → · 2021 by month → · Full archive since 1995 →

Topics in this entry

The Milky WayGalaxies

Topics are matched from words in the title and explanation.

On this day: January 23 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.