Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

Is the rest of the cosmos a pristine environment awaiting the arrival of humanity’s “post-human” descendants? Or is advanced ...

Humanity has already sent five spacecraft on trajectories that will eventually carry them beyond the Solar System, ...

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

Billions of years ago, while the solar system was still young, a massive object may have drifted into it. It's not a spaceship, but it is an alien visitor in its own right—a colossal interstellar body ...

Grain-sized remnants of alien technology may get caught in solar wind and land on plants and moons close to us ...

Is alien invasion armageddon coming for us in November? That's the speculation set off by a legitimate academic study recently published by a team of scientists. In early July, a previously ...

Even at this early stage in our spacefaring age, humanity has already begun sending probes that will eventually reach other ...

An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar System and is ...

Here’s what you’ll learn when you read this story: Every time an interstellar object comes whizzing into our Solar System, it brings with it a certain intrigue. Where is it from? How did it form? Why ...