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.

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

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

Solar panels may offer abundant and affordable energy — but their installation can be prohibitively expensive for many ...

The sun has become more and more active over the last 16 years, in a turn that surprised scientists and could affect space ...

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

Astronomers were fascinated after spotting an object from interstellar space hurtling through the solar system earlier this ...

Who hasn't looked into the sky and wondered if there's life out there, somewhere, looking back at us? Is it possible there's ...

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 just got another guest from the galaxy. Find out how scientists spotted this third interstellar object, what ...

3I/ATLAS, an interstellar object currently zipping through the solar system, is capturing the attention of astronomers, the ...