I/ATLAS arrived fast, bright, and strange. When astronomers spotted it on July 1, 2025, they knew almost immediately this was no ordinary comet.

The Harvard astrophysicist has devoted years—and thousands of interviews—to the idea that mysterious objects streaking ...

Scientists have identified interstellar comet 3I/ATLAS as the oldest known object to pass through the solar system, dating ...

In July 2025, astronomers spotted something remarkable passing through our Solar System, an object that had not come from ...

One year ago, on July 1, 2025, astronomers discovered a fascinating new object moving through the solar system. Detected by the Asteroid Terrestrial-impact Last Alert System (ATLAS), the object was ...

A newly spotted interstellar visitor just got an unusually close listen from California scientists — in a search for signs of ...

The planets are extremely large, with TOI-791 b being about the same size as Jupiter, and TOI-791 c even larger. Yet, they ...

A groundbreaking super-puff planet discovery has revealed two giant exoplanets with densities below cotton candy, changing how scientists understand alien worlds. These Jupiter-sized planets show that ...

One year ago, on July 1 2025, astronomers discovered a fascinating new object moving through the Solar System. Detected by ...

Scientists reveal comet 3I/ATLAS is up to 12 billion years old, offering insights into ancient planetary systems and cosmic ...