Drones on Mars Might Glow in the Dark

Scientists study how drones on mars might set off small electric currents in the atmosphere. When friction moves electrical charges between two things, like a person rubbing a balloon, on their head. On mars, that might happen when the blades of a martian drone, like the nuity helicopters, spin around and they get dust grains on their surface. And as the blades hit the grain, there could be a transfer of charge and an electric field building up which would then get the atmosphere to start conducting electricity. To us, that would look like a purply glow, but we would only see it if it was dark. But unfortunately, the helicopter doesn't fly at dusk, so we won't see