The James Webb Space Telescope, the most powerful space telescope ever built, has picked up highly unusual readings from an ...

Astronomers have recently detected a colossal object at the edge of our solar system, sparking excitement and curiosity ...

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

Astronomers simply can't shake the feeling that there's something really off about interstellar object 3I/ATLAS.

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 ...

Our solar system's latest and only third known interstellar visitor is becoming more fascinating by the minute. Spotted in early July, the object, dubbed 3I/ATLAS, is believed to be a comet. It's ...

Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the discovery of Pluto in the 1930s. Labelled as Planet X, prominent astronomers ...

An artist's conception of Centaur 29P/Schwassmann-Wachmann 1 outgassing material into space. Credit: NASA / ESA / CSA / L. Hustak (STScI) There's a class of objects journeying around our solar system ...

NASA's Voyager 1 launched 48 years ago in September 1977 on a decades-spanning journey to study the cosmos and search for ...