Interstellar comet 3I/ATLAS gets the closest it’ll ever get to Earth today, getting a ‘mere’ 167 million miles (270 million kilometers) from our planet. The bizarre cosmic visitor has been making ...

For only the third time in history, humanity is tracking a visitor from beyond the solar system, and one of the best views of ...

SETI scientists searched the interstellar object 3I/ATLAS for radio signals that could indicate extraterrestrial technology but found nothing beyond human-made interference. Even so, the ...

Scientists are digging into the hidden makeup of carbon-rich asteroids to see whether they could one day fuel space exploration—or even be mined for valuable resources. By analyzing rare meteorites ...