The Digital Press

The Rubin Observatory discovered that it had imaged the interstellar comet 3I/ATLAS ten days before its official discovery, providing valuable early data for study. This early detection allows astronomers to refine their models and gather extensive observations from multiple observatories.

Why it matters: Early imaging helps improve detection models and enables detailed study of rare interstellar objects like 3I/ATLAS.

The big picture: Increasing detections of interstellar objects highlight opportunities for future spacecraft missions and long-term solar system exploration.

Stunning stat: The comet's estimated size is likely only about 0.5 km, based on probabilistic analysis and previous comet observations.

Commenters say: Enthusiasts are excited about the Rubin Observatory’s capabilities and the wealth of data from multiple observatories, sparking ideas about future space probes.