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Cosmic Alerts: Rubin Observatory Spots Universe's Secrets
27 Feb
Summary
- Rubin Observatory launched a new alert system sending 800,000 notifications.
- The system detects celestial events within minutes for follow-up observations.
- The observatory features the largest digital camera and a massive mirror.

The Vera C. Rubin Observatory has initiated a revolutionary alert system, providing astronomers with real-time notifications of cosmic changes. On Tuesday night, the observatory dispatched 800,000 alerts worldwide, documenting celestial events as they occur. This system, developed over a decade by a team of researchers and software developers, is designed to process vast amounts of data.
Equipped with the largest digital camera ever built for astronomy and an 8.4-meter primary mirror, the Rubin Observatory can detect interesting astronomical events within two minutes. This rapid notification allows scientists to request immediate follow-up observations.
The initial alerts included detections of supernovae, variable stars, active galactic nuclei, and new asteroids within our solar system. Each alert signifies a change in the night sky since the last observation.
The observatory's alert system precedes its upcoming 10-year Legacy Survey of Space and Time (LSST), which will provide comprehensive sky coverage. During this survey, Rubin is expected to observe more objects than all other optical observatories combined.
Perched in the Chilean Andes, the Rubin Observatory released its first public images on June 23, 2025. These initial images showcased millions of galaxies and stars, alongside 2,104 previously undiscovered asteroids.




