# Rabaul Volcano, New Guinea, Seen from STS-64

JSC · 1994-09-29

Original title: New Guinea volcano (Rabaul) as seen from STS-64 (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/JSC · Source: https://images.nasa.gov/details/sts064-116-064

## What you would see

The square image shows Earth seen obliquely from orbit, with no spacecraft or people visible. In the upper left corner, a narrow strip of pure black marks outer space and the planet's curved edge. Below it stretch deep blue ocean and thin bands of cloud in pale blue, gray, and white. Occupying the upper half and center is an immense, flat cloud mass, brilliant white underneath and softly tinted pink, beige, and gray on top, with fine streaks drawn out horizontally as if combed by wind. Toward the center it narrows into a dark, funnel-like point that descends to the surface — the eruption column's base — casting a broad, diffuse, dark blue shadow over the sea. Beneath the main plume spreads a thinner layer of yellowish-brown and gray ash, blurred like smoke. In the foreground, the intense dark blue ocean is crossed by a long chain of small, puffy white clouds, bright and cottony, running diagonally from the lower left to the right edge. Other broken cloud patches appear at left and bottom. The light is bright and even, without visible sun, and emphasizes both the smooth, almost silky texture of the plume and the granular sparkle of ordinary clouds. The scale feels monumental: a geological event reduced to a point beneath a sky-sized canopy.

## How to look at it

Start with the enormous white cloud, then follow it down to the small, dark point where it narrows and touches the Earth: that tiny contact is the eruption. Next, look for the plume's shadow on the ocean and the paler ash spreading beneath it. The contrast between the calm lines of ordinary clouds and the volcano's expanding mass changes the scale of the whole scene.

## Context

This photograph, from NASA's Image and Video Library and credited to NASA/JSC, was taken by the crew of space shuttle Discovery during mission STS-64. According to the source, on the morning of September 19, 1994, two volcanic cones on opposite sides of the six-kilometer-wide sea crater at Rabaul, at the eastern end of New Britain, began erupting with very little warning. Discovery passed just east of the site about 24 hours later, near peak activity and at the start of the second day. The plume rose more than 60,000 feet, over 50,000 people evacuated, and light winds deposited most ash within 20 kilometers.
(certainty: alta; written by an AI model, muse-wonder-1.0; trust the source)

## Curious detail

The eruption plume rose more than 60,000 feet — about 18 kilometers — high enough to reach well above the cruising altitude of commercial airliners.

## Questions

- How does viewing a volcanic eruption from orbit change the sense of danger compared with seeing it from the ground?
- What does the sharp smallness of the vent beneath so vast a plume suggest about geological scale?
- Who is a scientific photograph like this made for, and what can it show that instruments alone cannot?

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

1. In the upper left corner, what colored band marks the edge of the planet and outer space?
2. The volcanic plume casts a wide diffuse shape over the sea, what color does that shape appear?
3. What chain of bright fluffy little clouds crosses the ocean diagonally in the foreground?

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