Science off the Sphere

Astronaut and chemist Dr. Don Pettit does physics demos that are out of this world. Currently on board the International Space Station, Dr. Pettit presents fantastic physics that can only be demonstrated in micro-gravity.

Episode 8: Goo!

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Science off the Sphere Challenge

Join the fun! Participate in the Physics Challenge. At the end of each video Dr. Pettit poses a challenge question.

Submit your answers below for a chance to have your name read from space and receive a snazzy t-shirt from Earth.

Challenge #8 Question:

Don's cornstarch solution is a shear-thickening non-newtonian fluid. What would change if Don used a shear-thinning fluid such as ketchup?

Submit Your Challenge Answer

A winner is randomly chosen from all correct answers submitted. You have one week from the date the challenge is posted. The winner will receive a "Science off the Sphere" t-shirt and have their name and answer read by Dr. Pettit from the ISS. Winners and answers are posted one week after the challenge question is posed.