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Celestial Wonders: Milky Way Illuminates Yellowstone's Silex Spring

A breathtaking view of the Milky Way galaxy illuminating the night sky over Yellowstone National Park.
Image: NASA / Dave Lane
Quick answer · as of 17 Aug 2026

Discover the breathtaking view of the Milky Way arching over Yellowstone's Silex Spring, a natural wonder illuminated by both earthly and cosmic forces.

The image captures the Milky Way's central band arching over Silex Spring, a vibrant hot spring in Yellowstone National Park. This natural pool, about 10 metres across, is illuminated artificially, highlighting the colourful layers of bacteria thriving in its geothermal waters. These bacteria, adapted to high temperatures, create a spectrum of colours, while steam rises from the spring, heated by the Yellowstone Hotspot's underlying magma. Above, the Milky Way's band, composed of billions of distant stars, stretches across the night sky, offering a glimpse into our galaxy's vastness.

A Cosmic and Terrestrial Intersection

This scene exemplifies the intersection of terrestrial and cosmic phenomena. While the Milky Way's stars are light-years away, the geological activity beneath Yellowstone is a reminder of Earth's dynamic processes. The Yellowstone Hotspot, responsible for past supervolcanic eruptions, continues to shape the landscape. Meanwhile, the Milky Way's visibility is a testament to the clarity of night skies in remote locations. Such images encourage reflection on our place in the universe, bridging the gap between Earth-bound science and astronomical exploration.

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Exploring the Night Sky

For those inspired to observe the Milky Way, choosing a location with minimal light pollution is key. Yellowstone, with its expansive skies, provides an ideal setting. To track visible passes of satellites or plan stargazing sessions, the Orbital Radar pass predictor offers valuable tools. This resource helps enthusiasts anticipate satellite visibility and enhance their night sky experiences.

Frequently Asked Questions

What causes the colours in Yellowstone's hot springs?
The colours are due to heat-loving bacteria that thrive in the hot springs, creating vibrant hues across the water's surface.
How can I see the Milky Way?
To view the Milky Way, find a dark location away from city lights on a clear night, ideally during a new moon phase.
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