Astronomy Picture of the Day ·

The Decade that Defined Star System

The Astronomy Picture of the Day for December 29, 1999 is “The Decade that Defined Star System,” an image. The picture is copyrighted by its creator (Drawing Credit & Copyright: Lynette Cook). The original explanation runs about 132 words.

The Decade that Defined Star System
Credit: Drawing Credit & Copyright: Lynette Cook Copyrighted Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“As the 1990s began, the only planetary star system known was our own Solar System . The first extra-solar star system was discovered orbiting a pulsar in 1991.”

— APOD editors, December 29, 1999

Read the full explanation on science.nasa.gov

At a glance

Date
December 29, 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 132 words

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

Topics in this entry

The Sun

Topics are matched from words in the title and explanation.

On this day: December 29 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.