Sitting alongside Bill Nye, three teens impressed the world this morning as they watched astronaut Sunita Williams test their winning experiments on YouTube Space Lab -- from 250 miles above Earth.

Last October, YouTube Space Lab called for students around the world to design and submit their own experiments to be performed in space and livestreamed. Submissions were judged by an impressive panel, including Stephen Hawking, Circque du Soleil founder Guy Laliberte, and astronauts Samantha Cristoforetti and Koichi Wakata.

One winning entry, submitted by Dorothy Chen and Sara Ma of Troy, Michigan, tests how space affects a terrestrial virus. The other winning entry, submitted by Amr Mohamed of Alexandria, Egypt, tests how zero-gravity affects spiders' ability to jump.

"I've always been fascinated with science because with a handful of equations, I can explain the world around me," Mohamed said in his video application.

The experiments were put to the test at the International Space Station by astronaut Sunita Williams. In the above video, Nye watches their incredible work in action with Chen, Ma, and Mohamed.

Which experiment impressed you most? Are you an aspiring scientist? Tell us about it in the comments below or tweet @HuffPostTeen!

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