Remember 3I/ATLAS? Yes, the interstellar comet that made plenty of headlines in 2025 is still romping through our solar ...

New photos captured by NASA's Curiosity rover show that Mars' giant, spiderweb-like "boxwork" features are covered in tiny, never-before-seen nodules that bear a striking resemblance to arachnid eggs.

If you think auroras on Earth are a strange and mesmerizing sight, that's nothing like what occurs on the perplexing world of Uranus.

New research using the James Webb Space Telescope offers the most detailed portrait yet of how auroras form on Uranus.

Astrobiologists say we could find evidence of microbial life within the next 10–20 years. What does that mean? Where are we ...

Life on Earth may not have started here at all. A scientist says alien intervention is unlikely but still possible, reshaping the debate on our true origins.

A vast underground tunnel known as a lava tube, formed from ancient volcanic activity, has been discovered Venus.

Venus has long been known as Earth’s evil twin. While they both are roughly the same size and formed in the same inner region of the solar system, Venus is far less hospitable to life as we know it.

New theoretical models have strengthened the case that immense, energy-harvesting structures orbiting their host stars could exist in principle in distant stellar systems. With the right engineering ...

Elon Musk discussed his views on whether aliens exist during a discussion at the World Economic Forum in Davos, Switzerland. Newsweek reached out to Musk’s company SpaceX for additional comment via ...