Drone radar could help spacecraft pinpoint where to drill for water on Mars, scientists say

A new study suggests the search for usable water on Mars may soon rely on an unexpected tool: drones equipped with radar, flying just above the surface to peer underground in ways orbiters cannot. Researchers led by the University of Arizona have shown that drone-mounted ground-penetrating radar can map buried glaciers on Earth in remarkable detail, offering a blueprint for how similar techniques could be used on Mars . …