Astronomy Picture of the Day · December 19, 2021

Planetary Alignment over Italy

The Astronomy Picture of the Day for December 19, 2021 is “Planetary Alignment over Italy,” an image. The picture is copyrighted by its creator (Image Credit & Copyright: Antonio Finazzi). The original explanation runs about 170 words.

The featured image shows a a sunset with the planets Venus, Saturn, Jupiter, the Moon, and Uranus all in a row. Please see the explanation for more detailed information. — Credit: Image Credit & Copyright: Antonio Finazzi Copyrighted Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“It is not a coincidence that planets line up. That’s because all of the planets orbit the Sun in (nearly) a single sheet called the plane of the ecliptic .”

— APOD editors, December 19, 2021

Read the full explanation on science.nasa.gov

At a glance

Date: December 19, 2021
Type: Image
Credit: Credit: Image Credit & Copyright: Antonio Finazzi
Copyright: Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length: About 170 words

All of December 2021 → · 2021 by month → · Full archive since 1995 →

Topics in this entry

The Moon The Sun

Topics are matched from words in the title and explanation.

On this day: December 19 in other years

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Source

Astronomy Picture of the Day, December 19, 2021 — science.nasa.gov/image-article/apod-2021-december-19-planetary-alignment-over-italy

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.