Geyser Eruption Beneath the Milky Way
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Geyser Eruption Beneath the Milky Way

by Chujie Liu

Old Faithful erupts under the Milky Way in Yellowstone National Park, illustrating active hydrothermal processes driven by Earth’s internal heat. Superheated groundwater periodically vents to the surface, linking subsurface geothermal dynamics with the broader planetary environment visible in the night sky.