On January 26th, 2274 Mars days into the mission, NASA declared Spirit a 'stationary research station', expected to stay operational for several more months until the dust buildup on its solar panels forces a final shutdown.

My new book, Thing Explainer, is out today!
(If you're in NYC, you can also come see me!)

Order: Amazon, Barnes & Noble, Indie Bound, Hudson

A puzzle for UK readers