What: A forward-looking SETI Live discussion examining the most significant space science missions, discoveries, and ...

When an object from outside our star system zooms through our neighborhood in the solar system, it provides a rare ...

Harvard astrophysicist Avi Loeb identifies 18 anomalies of interstellar object 3I/ATLAS, raising questions about whether it ...

Researchers used powerful radio telescopes to scan 3I/ATLAS for signs of alien technology.

NASA's most distant spacecraft had a critical thruster problem far from home. Fixing it required a long-distance call to overcome extreme cold and dwindling power. When you purchase through links on ...

It has been 10 years since Christopher Nolan's cinematic masterpiece Interstellar was released, and in this video, I take a ...

The Hubble Space Telescope has captured startling structures on interstellar comet 3I/ATLAS, narrow, sun-facing dust streams ...

Interstellar comet 3I/ATLAS is about to make its closest appearance to Earth today. This event is significant for astronomers studying the object. The comet offers a rare opportunity to examine matter ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American In an earlier blog post about Christopher ...