Astronomy Picture of the Day ·

Quarter Moons

The Astronomy Picture of the Day for October 21, 2023 is “Quarter Moons,” an image. The picture is copyrighted by its creator (Image Credit & Copyright: Marcella Giulia Pace). The original explanation runs about 155 words.

Quarter Moons
Credit: Image Credit & Copyright: Marcella Giulia Pace Copyrighted Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“Half way between New Moon and Full Moon is the Moon’s first quarter phase . That’s a quarter of the way around its moonthly orbit.”

— APOD editors, October 21, 2023

Read the full explanation on science.nasa.gov

At a glance

Date
October 21, 2023
Type
Image
Credit
Credit: Image Credit & Copyright: Marcella Giulia Pace
Copyright
Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length
About 155 words

All of October 2023 → · 2023 by month → · Full archive since 1995 →

Topics in this entry

The Moon

Topics are matched from words in the title and explanation.

On this day: October 21 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.