June 27, 2025 by A&S News

On June 23, 2025, the global astronomy community gathered for a monumental moment: the unveiling of the first images from the Vera C. Rubin Observatory in Chile.

The Dunlap Institute for Astronomy & Astrophysics in the Faculty of Arts & Science hosted a Rubin First Look Watch Party, where researchers, students, and astronomy enthusiasts watched history unfold as the largest camera ever built captured its first glimpse of the night sky.

Astronomers and astrophysicists at the University of Toronto involved in the international collaboration have been preparing for Rubin’s “first look” at the Universe for decades, and are eager to get their hands on this exquisite data.

The new images mark the start of Rubin’s 10-year Legacy Survey of Space and Time (LSST), which will map the southern sky every few nights, capturing billions of stars, galaxies, and solar system objects — each imaged over 800 times.

The observatory will detect 10,000 new objects and send 10 million alerts each night, enabling astronomers to track cosmic changes in real time. Within just one year, Rubin is expected to discover more asteroids than all previous telescopes combined.

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