The universe is supposed to look the same no matter where you stand. That idea, known as the cosmological principle, sits at the heart of modern astrophysics. It says matter spreads out evenly when ...

Something strange is moving through our solar system — and it’s making headlines everywhere. The mysterious object, known as 3I/ATLAS, has become one of the most talked-about space mysteries in recent ...

"If our solar system is indeed moving this fast, we need to question fundamental assumptions about the large-scale structure of the universe." When you purchase through links on our site, we may earn ...

Big questions about 3I/ATLAS remain, some of which may be impossible to answer — including where exactly it came from Big questions about 3I/ATLAS remain, some of which may be impossible to answer — ...

3I/ATLAS has now made its closest approach to the sun and Earth and is now heading back out toward the outer solar system. On ...

The new Vera C. Rubin Observatory captured a video of Comet 3I/ATLAS zipping through space during its testing phase. Credit: RubinObs / NOIRLab / SLAC / NSF / DOE / X screenshot A new telescope built ...

No matter your areas of interest, it's likely your newsfeed, whichever one you may use, has been flooded recently with the opinions of so-called Harvard scientists that there's an alien spacecraft ...

After less than a year in orbit, the Southwest Research Institute-built PUNCH spacecraft have made major accomplishments, imaging the Sun in context while tracking comets and enormous space weather ...

A new image has revealed the clearest glimpse yet of an interstellar visitor zipping through our solar system.Video above: Astronomers discover how planets formThe Hubble Telescope and its Wide Field ...