Here's one of the cool things you learn when you land a seismometer on another planet: Mars's days are getting shorter. Or to put it another way, the planet is spinning faster. That was discovered ...

A deep pocket of hot, low-density material hiding in the Martian mantle may be responsible for gradually speeding up the planet’s spin, according to a peer-reviewed study that connects orbital gravity ...

NASA got through the Artemis II mission last week with a few minor “anomalies,” as NASA calls problems, but in 2028 it plans to launch a nuclear-powered rocket to Mars as an initial step to using ...