NASA's Perseverance Mars rover may have captured an image of interstellar comet 3I/ATLAS streaking across the sky above the ...

We're just weeks away from this interstellar visitor reaching its brightest in Earth's night skies. Will we see it?

NASA’s Perseverance rover faced a tense situation on Mars when its drill bit became lodged in a layer of rock, delaying its ...

The comet, which flew by Mars on October 3, is estimated to be around 46 kilometers in diameter.

For as long as we’ve looked up at the night sky, we’ve all asked variations of the same question: Are there aliens up there? Did NASA find life on Mars? The short answer is no — we haven’t uncovered ...

For the U.S. to win the next space race, we need to deploy sustained power to stay on the moon, or risk ceding space leadership to China.

The rover’s science instruments found that the formation’s sedimentary rocks are composed of clay and silt, which, on Earth, are excellent preservers of past microbial life. The findings were made ...

Mars’ north polar vortex locks its atmosphere in extreme cold and darkness, freezing out water vapor and triggering a ...

A mudstone sample from Jezero Crater shows textures and minerals that on Earth often form through microbial activity. Scientists caution that nonbiological processes could also explain the features, ...