It sounds simple enough, but designing a cup for space requires a deep understanding of how fluids move in low gravity. "We're geeks, and we make spacecraft fluid systems," says Mark Weislogel, a professor of mechanical and mechanical engineering who is leading the research. "It's like space plumbing.
Reason #eleventy-kazillion why science is awesome.
"This Cup Lets Astronauts Sip Espresso in Zero Gravity"