TL;DR
Prime made for students and young adults
- Fast, free delivery for dorm and study essentials
- Prime Video and Amazon Music included
- Member-only deals
NASA’s Astronomy Picture of the Day for November 1, 2026, features a collection of differently colored full Moons photographed by Marcella Giulia Pace from locations across Italy over 10 years. NASA explains that atmospheric scattering can make the Moon look red or yellow near the horizon, while the causes of the blue and purple appearances are less certain.
NASA’s Astronomy Picture of the Day for November 1, 2026, features a collection of differently colored full Moons photographed by astrophotographer Marcella Giulia Pace from locations across Italy over 10 years. The accompanying explanation describes how the Moon’s appearance can change with viewing conditions, while noting that some colors in the collection have uncertain causes.
The NASA Science feature brings together images showing apparent shades including red, yellow, blue and purple. NASA says the photos document full Moons observed at different times and places; it does not identify a single cause for every color in the collection. The image credit is given to Marcella Giulia Pace, and the explanation is credited to NASA’s Astronomy Picture of the Day authors and editors.
According to the explanation, a Moon that looks red or yellow near the horizon is often seen through a long path across Earth’s atmosphere. Some blue light is scattered away along that path, and fine dust in the atmosphere can also affect the view. NASA says a blue-looking Moon is rarer and can indicate an atmosphere carrying larger dust particles.
The feature also includes a total lunar eclipse from July 2018. In that image, the Moon appears faintly red while inside Earth’s shadow. NASA attributes the effect to sunlight refracted through air around Earth. The explanation says the cause of the purple appearance is unclear and may involve several effects together.
Why Lunar Colors Change
The collection shows that the color of the Moon as seen from Earth is not always a direct indication of a change on the lunar surface. Atmospheric conditions and viewing angle can alter the light reaching an observer, producing colors that vary from one night to another.
The photographs were made across 10 years and different Italian locations. NASA’s explanation relates some colors to atmospheric effects while leaving other causes uncertain.
In the eclipse image, the Moon is in Earth’s shadow, but sunlight refracted through the atmosphere can still reach it. NASA links the red tint to light passing through Earth’s atmosphere.
Popular right now
Ninja CREAMi Scoop & Swirl 13-in-1 Ice Cream and Soft Serve Maker (NC701)
KitchenAid Artisan 5-Quart Tilt-Head Stand Mixer, Almond Cream
Jura E6 Automatic Espresso Machine, Piano Black (15622)
As an affiliate, we earn on qualifying purchases.
A Decade of Italian Moon Images
NASA’s Astronomy Picture of the Day presents a different image or photograph each day with an explanation written by a professional astronomer. The November 1 entry focuses on apparent lunar color and pairs Pace’s image collection with an account of how Earth’s atmosphere can affect what observers see.
The source says Pace documented the images over 10 years from different locations across Italy. It does not provide a detailed date and location for each image in the collection. The final image is identified as a total lunar eclipse that occurred in July 2018, when the Moon appeared faintly red in Earth’s shadow.
NASA’s explanation distinguishes the Moon’s appearance outside Earth’s atmosphere from its appearance to people on the ground. Outside the atmosphere, it says, the dark Moon reflecting sunlight appears brown-tinged gray. From Earth, atmospheric scattering and dust can affect the colors observed, especially when the Moon is low near the horizon.
Blue and Purple Causes Remain Open
The NASA feature offers possible explanations, not a full analysis of every photograph. It says a blue Moon can indicate an atmosphere with larger dust particles, but it does not give measurements of atmospheric conditions for the image shown. The purple Moon’s cause is described as unclear and possibly a combination of effects.
The source also does not give individual dates, locations, camera settings or atmospheric readings for each image in Pace’s collection. It therefore does not establish which specific conditions produced every shade. The broad explanation of red and yellow appearances near the horizon should not be read as a confirmed account of every photograph’s exact circumstances.
Daily APOD Continues November 2
NASA’s APOD page lists “open space” as the subject of the next picture, scheduled for November 2, 2026. The November 1 feature does not announce a follow-up study or further analysis of Pace’s photographs. Information beyond the explanation provided with this entry would be needed to establish details about individual images.
The published feature presents the collection as a visual record of lunar colors and gives qualified explanations for several appearances. The source does not confirm the specific causes of the blue or purple shades.
Key Questions
What does NASA’s November 1 APOD show?
It shows a collection of apparent full-Moon colors photographed by Marcella Giulia Pace over 10 years from different locations across Italy.
Why can the Moon look red or yellow?
NASA says these colors usually appear when the Moon is near the horizon, where its light travels through a longer path in Earth’s atmosphere. Scattering removes some blue light, and fine dust can also affect the view.
What might make the Moon look blue?
NASA says a blue-colored Moon is rare and can indicate an atmosphere carrying larger dust particles. The feature does not confirm the exact conditions for the image shown.
What caused the purple Moon in the collection?
The cause is unclear, according to NASA’s explanation. It may result from a combination of effects.
Why is the eclipse Moon red?
The final image shows the total lunar eclipse of July 2018. NASA says the faint red appearance came from sunlight refracted through air around Earth while the Moon was in Earth’s shadow.
Source: science.nasa.gov
![The Legend Of Von Neumann (1973) [Pdf]](https://micronomicon.com/wp-content/uploads/2026/10/the-legend-of-von-neumann-1973-pdf-featured-560x300.jpg)
