The anomalous nature of the object led astrophysicist Avi Loeb to apply a thought experiment to it, highlighting everything about it that might align with a hypothetical alien spacecraft.

NASA is set to launch three spacecrafts Tuesday with the goal of unlocking the mysteries of solar weather at the edge of our ...

An interstellar visitor is barreling closer to our sun, giving scientists a rare opportunity to observe an object from outside our celestial backyard. The comet 3I/ATLAS is just the third known object ...

In this curious film, a pair of friends venture out into the desert to build an accurate to scale model of our solar system.

Harvard astronomer Avi Loeb argued interstellar object 3I/ATLAS "could either visit us or release some mini-probes that ...

The solar system lost its ninth planet back when Pluto was demoted to a dwarf planet, but research might indicate that there ...

Dwarf planet 2023 KQ14, Ammonite, has a stable orbit that challenges the hypothesis of the mysterious Planet Nine.

The NASA Interstellar Mapping and Acceleration Probe (IMAP) spacecraft is scheduled to launch on September 23, 2025, to study ...

I/ATLAS is a fast, ancient interstellar object. Its odd features fuel both scientific study and speculation. On July 1, astronomers detected a strange, fast-moving object racing toward the Sun. Named ...