Astronomy Picture of the Day · October 18, 2021

Earthshine Moon over Sicily

The Astronomy Picture of the Day for October 18, 2021 is “Earthshine Moon over Sicily,” an image. The picture is copyrighted by its creator (Image Credit & Copyright: Dario Giannobile). The original explanation runs about 177 words.

The picture shows the sky over Sicily, Italy earlier this month featuring a crescent moon with Earthshine, Venus, and Antares. Please see the explanation for more detailed information. — Credit: Image Credit & Copyright: Dario Giannobile Copyrighted Shown from science.nasa.gov. Not hosted by OpenOrbit.

From the explanation

“Why can we see the entire face of this Moon? When the Moon is in a crescent phase, only part of it appears directly illuminated by the Sun .”

— APOD editors, October 18, 2021

Read the full explanation on science.nasa.gov

At a glance

Date: October 18, 2021
Type: Image
Credit: Credit: Image Credit & Copyright: Dario Giannobile
Copyright: Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length: About 177 words

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

Topics in this entry

The Moon The Sun Venus

Topics are matched from words in the title and explanation.

On this day: October 18 in other years

On Amazon

Popular picks for space fans

As an Amazon Associate I earn from qualifying purchases.

Electronics Amazon Kindle Paperwhite Signature Edition 32GB Read astronomy and space-history books anywhere. View on Amazon → Electronics Bose QuietComfort Wireless Headphones Noise-cancelling headphones for documentaries and launch livestreams. View on Amazon →

Source

Astronomy Picture of the Day, October 18, 2021 — science.nasa.gov/image-article/apod-2021-october-18-earthshine-moon-over-sicily

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.