On July 1, astronomers spotted an unusual high-speed object zooming towards the sun. Dubbed 3I/ATLAS, the surprising space traveler had one very special quality: its orbit showed it had come from ...

It’s probe-ably nothing. The newly discovered Manhattan-sized interstellar object zooming through our solar system has been identified as a comet — but two Harvard scientists argue there is reason to ...

Scientists are hard at work considering what kinds of engineering alien probes would need to reach us through interstellar space. However, crossing deep space to reach Earth with a probe would require ...