Time to rock and roll! After 20 years in space, our Mars Reconnaissance Orbiter is testing new, large rolls — nearly inverting the spacecraft — that will help it become even more effective at hunting for water beneath the surface. See some early results: go.nasa.gov/3FXilvR “Not only can you teach an old spacecraft new tricks, you can open up entirely new regions of the subsurface to explore by doing so,” said one of the authors of a new paper about the maneuvers, Gareth Morgan of the Planetary