NASA said it's revamping its Artemis moon exploration program to make it more like the fast-paced Apollo program half a century ago. The plan means adding an extra practice flight before attempting a high-risk lunar landing with a crew in two years.

In light of multiple Artemis II delays, NASA believes putting humans back on the moon with Artemis III is too ambitious.

Powerful solar superflares, which can generate geomagnetic storms and disrupt radio communications and GPS, damage satellites and endanger astronauts and even airline passengers, just got a lot easier...