There are plenty of hydrophobic coatings out there, but scientists have now etched tiny nanostructures onto the surface of metal to make it water-repellant for the first time.
We could watch these little water droplets bounce all day. Totally mesmerising.
Video produced in partnership with Futurism.
Here's what you need to know.
Apart from Earth, of course.
It has fascinating properties.
The mystery continues.
What took them so long?