Joe Palca

The Lunar Trailblazer orbiter's launch window opens Feb 26. It's catching a ride with Intuitive Machines IM-2 mission which is landing on the moon near the south pole. Both have instruments for looking for water.

A tiny accelerator could be useful in medicine as well as basic science. Instead of speeding up beams of electrons through giant tunnels, the aim here is to build accelerators on semiconductor chips.