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VISUAL DESCRIPTION:
A star orbits a black hole.

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When it comes too close to the black hole,
the black hole pulls gas off the star, causing a bright flare.

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The star continues to orbit the black hole,
losing more gas each time it passes closely.

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A graph at the bottom of the screen shows
the brightness of the area over time.

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The graph spikes every time a bright flare is seen.