Have you ever wondered how difficult the life is in the outer space? You may somehow manage to find a way to eat, but it is immensely difficult to drink in a zero-gravity environment.

NASA came up with a smart solution to tackle this issue, as astronaut Nicole Mann demonstrated “capillary action” to drink a hot cappuccino while on the International Space Station.

The special cup functions just like cups here on Earth, however, instead of relying on gravity, it uses a combination of surface tension, wetting and cup geometry to keep the liquids in place.

It allows astronauts to drink a variety of liquids while they are in space.

It is worth mentioning here that in a near zero-gravity environment, liquids behave very differently. The lack of gravity causes them to float around in blobs, which make them very difficult to handle.