When a comet from another star system drifts through the solar system, astronomers do not just see an icy traveler. They see a rare chance to test whether familiar space physics still holds up when ...

An interstellar comet can glow in X-rays even while remaining hundreds of millions of kilometers away. That is what makes 3I/ATLAS unusually valuable to astronomers. The object, only the third known ...

The observations offer a rare glimpse into our solar system's early history. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space news, ...