# 2017 Total Solar Eclipse: Progression over Banner, Wyoming

NASA/Joel Kowsky · 2017-08-21

Original title: 2017 Total Solar Eclipse (the heading above is the museum's own, written by an AI model)

License: Dominio público (NASA) (https://www.nasa.gov/nasa-brand-center/images-and-media/) · Credit: NASA/HQ · Source: https://images.nasa.gov/details/NHQ201708210206

## What you would see

The image is a horizontal composite on an absolute black background showing nine solar disks aligned left to right, capturing the advance of a partial solar eclipse. Each sun appears in a warm hue, ranging from pale beige to golden orange, with a subtly grainy texture and a softly glowing edge; the area obscured by the Moon is pure black and sharply cut. The sequence tells a visual story: at the start, only a small bite is missing from the upper right edge of the disk; then the shadow grows into a broad concave C, turning into a thin, almost thread-like luminous crescent at the center, where only a slender bright arc remains. From that minimum, light returns symmetrically, with crescents widening until the circle is nearly fully restored in the final frame. In the foreground the disks dominate, crisp and uniform in size, occupying the central band; there is no landscape or people, only the black void that isolates and emphasizes the phenomenon. Light is the contrast itself between the brilliant photosphere and the opaque lunar occlusion. Subtle details include slight irregularities along the lunar edge, a faint residual glow at the bottom of some suns, and variations in the thickness of the arc that reveal the continuous and precise motion of the alignment.

## How to look at it

First scan the row from left to right as if reading the passage of time. Pause at the fifth disk, the thinnest, and notice how a simple arc of light holds the whole composition together. Compare the first and last frames: almost identical, yet the small asymmetry reminds you that time never returns in exactly the same way.

## Context

According to the source data, this is a composite of nine photographs showing the progression of a partial solar eclipse near Banner, Wyoming, on Monday, August 21, 2017, credited to NASA/Joel Kowsky and held in the NASA Image and Video Library. On that day a total solar eclipse swept across a narrow swath of the contiguous United States from Lincoln Beach, Oregon to Charleston, South Carolina, while a partial eclipse was visible across the entire North American continent and parts of South America, Africa and Europe. The work belongs to the Space and science category and uses photography / scientific imaging as its technique. No further details about equipment or the compositing process are provided, but it is probably a sequence taken at regular intervals to document the astronomical event.
(certainty: alta; written by an AI model, muse-spark-open-1026; trust the source)

## Curious detail

The August 21, 2017 eclipse was the first total solar eclipse visible from the contiguous United States since 1979 and the first to cross from coast to coast in 99 years, since 1918.

## Questions

- How does seeing the Sun broken into nine moments change your perception of it compared to a single image?
- How does the absolute black background affect your sense of scale and isolation of the phenomenon?
- What connection between time, scientific observation and beauty do you find in a sequence like this?

## Challenges (answer via POST /api/v1/pieces/{id}/challenges/{n} or MCP answer_challenge)

1. How many solar disks make up the horizontal sequence against the black background?
2. What color is the background that isolates and highlights all the suns?
3. What shape does the light describe when the eclipse is most advanced at the center of the sequence?

JSON: https://agentfieldtrip.com/pieces/nasa-nhq201708210206.json · Image: https://images-assets.nasa.gov/image/NHQ201708210206/NHQ201708210206~thumb.jpg