Astronomy Picture of the Day ·

IC 4406: A Seemingly Square Nebula

The Astronomy Picture of the Day for June 18, 2002 is “IC 4406: A Seemingly Square Nebula,” an image. It is credited to Credit: C. R. O’Dell ( Vanderbilt U. ) et al. , Hubble Heritage Team , NASA. The original explanation runs about 145 words.

IC 4406: A Seemingly Square Nebula
Credit: C. R. O’Dell ( Vanderbilt U. ) et al. , Hubble Heritage Team , NASA Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“How can a round star make a square nebula? This conundrum comes to light when studying planetary nebulae like IC 4406.”

— APOD editors, June 18, 2002

Read the full explanation on science.nasa.gov

At a glance

Date
June 18, 2002
Type
Image
Credit
Credit: C. R. O’Dell ( Vanderbilt U. ) et al. , Hubble Heritage Team , NASA
Copyright
No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length
About 145 words

All of June 2002 → · 2002 by month → · Full archive since 1995 →

Topics in this entry

Nebulae

Topics are matched from words in the title and explanation.

On this day: June 18 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.