Rubin Observatory basks in galactic glow | Space photo of the day for Nov. 3, 2025

A glowing galaxy can be seen in the orange and blue night sky over the domed building of the Rubin Observatory
Those working at the Rubin Observatory may see similar stunning views of our home galaxy. (Image credit: NSF–DOE Rubin Observatory/P.J. Assuncao Lago)

Our vantage point within the Milky Way means that, unlike views of distant galaxies, we experience a sky rich in complexity, with swirling dust and the faint glow of countless stellar remnants. For centuries humanity has looked upward at the Milky Way's bright band and sought to understand its structure, composition and place in our universe.

What is it?

One of those ground-based telescopes is the Rubin Observatory, named after famed astronomer Vera Rubin. Unlike other telescopes, the Rubin Observatory is working to capture the night sky in real-time by scanning it every few nights, creating a digital movie of our universe.

Where is it?

The Rubin Observatory is located on Cerro Pachón in the Andes Mountains in Chile.

The Milky Way can be seen over the Rubin Observatory (Image credit: NSF–DOE Rubin Observatory/P.J. Assuncao Lago)

Why is it amazing?

To scan the skies in real time, the Rubin Observatory relies on the LSST camera, the largest digital camera ever built, that can image an area of the sky around 40 times the size of the full moon in a single exposure. As it runs, the LSST camera will produce tens of petabytes of data over the next decade. Astronomers hope to use this data to help tackle some of the most pressing cosmic questions, such as those around dark matter and dark energy or studying potentially hazardous asteroids that may collide with Earth.

Rubin's data will be made publicly available during this process, empowering scientists and even citizen scientists worldwide to explore, analyze and make discoveries about our cosmos.

Want to learn more?

You can learn more about the Rubin Observatory and other ground-based telescopes.

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Kenna Hughes-Castleberry is the Content Manager at Space.com. Formerly, she was the Science Communicator at JILA, a physics research institute. Kenna is also a freelance science journalist. Her beats include quantum technology, AI, animal intelligence, corvids, and cephalopods.

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