Astronomy Picture of the Day · December 13, 2009

Crescent Neptune and Triton

The Astronomy Picture of the Day for December 13, 2009 is “Crescent Neptune and Triton,” an image. It is credited to Credit: Voyager 2, NASA. The original explanation runs about 125 words.

From the explanation

“Gliding silently through the outer Solar System , the Voyager 2 spacecraft camera captured Neptune and Triton together in crescent phase in 1989. The above picture of the gas giant planet and its cloudy moon was taken from behind just after closest approach .”

— APOD editors, December 13, 2009

Read the full explanation on science.nasa.gov

At a glance

Date: December 13, 2009
Type: Image
Credit: Credit: Voyager 2, NASA
Copyright: No copyright notice on the entry. Check the credited institution’s own usage rules before reusing it.
Explanation length: About 125 words

All of December 2009 → · 2009 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 13 in other years

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Source

Astronomy Picture of the Day, December 13, 2009 — science.nasa.gov/image-article/apod-2009-december-13-crescent-neptune-and-triton

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.