Rubin Tracks Skyscraper-Size Asteroids and Failed Supernovas

15 hours ago

Vera C. Rubin Observatory begins operations, imaging the Southern Hemisphere sky every few days to create a large time-lapse movie over a decade.
In its first year, Rubin is expected to find 1 million undiscovered asteroids, thousands of comets, and billions of stars and galaxies.
Initial data reveals superfast-rotating asteroids, like 2025 MN45, which spins every 1.88 minutes, suggesting a solid structure rather than rubble.
Rubin may spot small asteroids days before Earth impact, allowing advance warnings and preparations for meteorite observations.
The observatory's alert system generated 800,000 alerts in one night, with future surveys projected to produce 7 million alerts nightly.
Rubin aims to discover 250,000 Type Ia supernovas annually, helping resolve the Hubble tension and probe dark energy in detail.
It detected interstellar comet 3I/ATLAS and is poised to find more interstellar objects, offering insights into other solar systems.
Using photometric redshift, Rubin will map billions of galaxies to study dark energy and dark matter, and aid fast radio burst research.
Scientists anticipate an explosion of astronomical discoveries, ushering in a new era despite challenges in handling vast data volumes.

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