Astronomy Picture of the Day · April 21, 1997

Big Sky Comet

The Astronomy Picture of the Day for April 21, 1997 is “Big Sky Comet,” an image. The picture is copyrighted by its creator (Big Sky Comet Credit and Copyright: Dewey Vanderhoff). The original explanation runs about 110 words.

From the explanation

“Explanation : On April 17 th , “Big Sky” country sure lived up to its name. The dark skies over the US states of Wyoming, Montana and the Dakotas were quite busy, as shown by this photograph featuring Comet Hale-Bopp .”

— APOD editors, April 21, 1997

Read the full explanation on science.nasa.gov

At a glance

Date: April 21, 1997
Type: Image
Credit: Credit: Big Sky Comet Credit and Copyright: Dewey Vanderhoff
Copyright: Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length: About 110 words

All of April 1997 → · 1997 by month → · Full archive since 1995 →

Topics in this entry

Comets

Topics are matched from words in the title and explanation.

On this day: April 21 in other years

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Source

Astronomy Picture of the Day, April 21, 1997 — science.nasa.gov/image-article/apod-1997-april-21-big-sky-comet

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.