These three exoplanets are among the least dense ever found, and all attempts to probe their atmospheres have been blocked by a mysterious smog.

Also, March Madness begins. Here’s the latest at the end of Thursday. By Matthew Cullen President Trump said today that he would to do whatever was necessary to stop energy prices from continuing to ...

He wakes up alone on a spaceship, barely able to speak, and somehow ends up Earth’s last, nerdy hope — armed with a dry-erase marker, a useless AI, and the kind of scrappy optimism that makes the end ...