Astronomy Picture of the Day · April 16, 1999

Upsilon Andromedae: An Extra-Solar System

The Astronomy Picture of the Day for April 16, 1999 is “Upsilon Andromedae: An Extra-Solar System,” an image. The picture is copyrighted by its creator (Drawing Credit & Copyright: Lynette Cook). The original explanation runs about 141 words.

From the explanation

“Yesterday, astronomers announced the discovery of the first system of planets around a normal star other than our Sun . Previously, only single planet star systems had been found.”

— APOD editors, April 16, 1999

Read the full explanation on science.nasa.gov

At a glance

Date: April 16, 1999
Type: Image
Credit: Credit: Drawing Credit & Copyright: Lynette Cook
Copyright: Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length: About 141 words

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Topics in this entry

The Sun

Topics are matched from words in the title and explanation.

On this day: April 16 in other years

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Source

Astronomy Picture of the Day, April 16, 1999 — science.nasa.gov/image-article/apod-1999-april-16-upsilon-andromedae-an-extra-solar-system

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.