An interstellar comet from another star system made a close pass by Mars, with a fleet of spacecraft observing the rare event. The comet, known as 3I/Atlas, zoomed within 18 million miles (29 million ...

"It tells us that the ingredients for life's chemistry are not unique to our own." A rocky visitor from beyond our solar system is leaking water like a "fire hose running at full blast," a new study ...

Several spacecraft are on watch this week as an interstellar traveler approaches Mars. This is real life, not a sci-fi movie, but there’s also no impending alien invasion. It’s just a harmless but ...

A rocky visitor from beyond our solar system is leaking water like a "fire hose running at full blast," a new study reports. Using NASA's Neil Gehrels Swift Observatory, scientists have for the first ...