Rubin will #CaptureTheCosmos in exquisite detail starting in 2026 🌌 Funded by @NSF and @DOEScience. Para español: instagram.com/rubin_observat…

Cerro Pachon, Chile
A new view of a familiar field 🤩 Meet NSF–DOE Rubin Observatory's breathtaking view of the renowned COSMOS field🌀✨ rubinobservatory.org/news/ru… 🧵
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Welcome to Chile, @SLACLab LSST Camera team colleagues! They arrived from California last week for scheduled camera work during NSF–DOE Rubin Observatory’s planned engineering downtime. This engineering period will last about three weeks in total.
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Planned engineering periods are common in ground-based astronomy, especially in winter when the weather is less favorable. During this time, teams will do maintenance and other work that keeps the observatory running smoothly during the rest of the year! đź”§đź”­
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📸: NSF–DOE Rubin Observatory/NOIRLab/SLAC/AURA/T. Lange
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Imagine looking up and watching a star suddenly lose 99% of its light. These stars are a rare type of variable star called an R Coronae Borealis. They suddenly puff out huge clouds of dust, blocking nearly all their light for months before returning to normal.
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We can't see inside stars — we really can only observe the light coming from their surfaces. But when a star changes in brightness, it can reveal clues about what's happening deep inside. That's why scientists are so interested in variable stars!
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NSF–DOE Rubin Observatory will detect ~100 million variable stars during its 10-year survey, helping scientists uncover why some stars stay steady for billions of years while others rewrite the rules! 🎥: NSF–DOE Rubin Observatory/NOIRLab/SLAC/AURA
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In the sky above NSF–DOE Rubin Observatory shines the Pleiades (M45): an open star cluster with at least 1000 stars!✨ Its bright stars are too bright for Rubin's sensitive camera to study, but Rubin will observe many other clusters & help scientists study how stars evolve.
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Happy September equinox from NSF–DOE Rubin Observatory! It's the first day of spring here in the south🌸 Equinox fun fact: day & night aren't exactly equal👀 Atmospheric refraction and the way we define sunrise/sunset mean most places get slightly more than 12 hours of daylight!
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The Moon is showing off again🌕✨ It's International #ObserveTheMoon Night! 🌙 The Moon is dazzlingly bright — so bright that NSF–DOE Rubin Observatory will never point at it. But there are many Solar System objects that are incredibly faint, and that’s where Rubin shines.
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Our Solar System has millions of wandering asteroids and comets that are small, far away, and usually dark. Rubin Observatory excels at detecting faint objects, and it’ll reveal 10-100 times more Solar System objects than were known before! 🔭
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📸: 1, 4: NSF–DOE Rubin Observatory/NOIRLab/SLAC/AURA/H. Stockebrand 2: NSF–DOE Rubin Observatory/NOIRLab/SLAC/AURA/P. Horálek 3: NSF–DOE Rubin Observatory/NOIRLab/SLAC/AURA/Y. AlSayyad
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¡Felices Fiestas Patrias!🇨🇱🎉 From Cerro Pachón, NSF–DOE Rubin Observatory wishes our colleagues, neighbors, & the entire Chilean community a joyful celebration. Chile’s national holidays are celebrated as Fiestas Patrias: a time for food, dancing, loved ones, & Chilean pride🇨🇱
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Meet LEDA 1205871 and LEDA 29228, two galaxies in NSF–DOE Rubin Observatory's view of COSMOS. They're “shell” galaxies, created when a larger galaxy absorbs a smaller one. These cosmic ripples preserve clues to past mergers, and Rubin’s sensitivity will help uncover many more 🌌
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Just a piece of NSF–DOE Rubin Observatory's Ocean of Stars 🌊✨ This galaxy is MCG-06-33-009, and the blue knots in its spiral arms show where hot, young stars are forming. Rubin will capture billions of galaxies and enable scientists to study how galaxies grow and change 🌀
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POV: Your background music is a bit…terrestrial. Try a cosmic soundtrack instead! 🎧🌌 Skysynth translates NSF–DOE Rubin Observatory’s data into sound — now with Rubin's view of COSMOS! Let it drift, or pan, zoom, and jump between different spots🎶 skyviewer.app/skysynth
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Just a normal camera, if “normal” means: 🔭 A 3.2-billion-pixel sensor 🌌 A field of view that could fit ~45 full Moons ⏱️ A new 8-gigabyte image every ~40 seconds NSF–DOE Rubin Observatory's LSST Camera is the largest ever built (thanks @SLAClab!) Ok, maybe that's not normal.
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📷: 1. J. Orrell/SLAC National Accelerator Laboratory 2. LSST Camera Team/NSF–DOE Rubin Observatory/NOIRLab/SLAC/AURA 3. O. Bonin/SLAC National Accelerator Laboratory 4. NSF–DOE Rubin Observatory/NOIRLab/SLAC/AURA/T. Lange
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Universe, meet your astronomical dream team! 🤝 Two observatories, two different ways of seeing the cosmos, and a whole lot of potential for discovery when their observations come together.
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🛰️ @NASA's Roman Space Telescope will capture sharp, wide-field views from space. Its crisp vision will reveal details that can be difficult to see from the ground, especially in crowded regions of the sky, while its infrared eye will peer through dust that blocks visible light.
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Together, they'll give us a richer and more complete view of our dynamic Universe, leading to discoveries that neither dataset could reveal on its own! 🌌 📷: 1. NSF–DOE Rubin Observatory/NOIRLab/SLAC/AURA/P. Horálek 2. NASA Goddard Scientific Visualization Studio
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