Astronomy Picture of the Day · May 23, 1999

The Keyhole Nebula

The Astronomy Picture of the Day for May 23, 1999 is “The Keyhole Nebula,” an image. The picture is copyrighted by its creator (Credit: NOAO, NSF; Copyright: AURA). The original explanation runs about 126 words.

From the explanation

“The dark dusty Keyhole Nebula gets its name from its unusual shape. Officially designated NGC 3324, the Keyhole Nebula is a smaller region superposed on the larger Eta Carina Nebula .”

— APOD editors, May 23, 1999

Read the full explanation on science.nasa.gov

At a glance

Date: May 23, 1999
Type: Image
Credit: Credit: NOAO, NSF; Copyright: AURA
Copyright: Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length: About 126 words

All of May 1999 → · 1999 by month → · Full archive since 1995 →

Topics in this entry

Nebulae

Topics are matched from words in the title and explanation.

On this day: May 23 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

Astronomy Picture of the Day, May 23, 1999 — science.nasa.gov/image-article/apod-1999-may-23-the-keyhole-nebula

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.