Science off the Sphere: Yo-Yos in Space

NASA Astronaut Don Pettit uses his off-duty time to practice his microgravity yo-yo skills.

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Science off the Sphere: Astro Puffs

In his off duty time, NASA Astronaut Don Pettit explores the physics of water in a weightless environment. Published as a collaboration between NASA and the American Physical Society.

This time:  waves and refraction with a big sphere of water.

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Science off the Sphere: Spring Theory

How do you measure mass in a weightless environment? NASA Astronaut Don Pettit demonstrates as part of a collaboration between NASA and the American Physical Society.

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Science off the Sphere: Space Balloonacy

In his off duty time, NASA Astronaut Don Pettit cools down with some microgravity water balloon experiments aboard the International Space Station.

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Science off the Sphere: 1.21 Legowatts

NASA Astronaut Don Pettit gets creative with an educational LEGO kit aboard the International Space Station. Answer the challenge question at www.physicscentral.com/sots for a chance for prizes!

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Science off the Sphere: Space Soundwaves II- Electric Didgeridoo

In his off-duty time, NASA Astronaut Don Pettit likes to explore scientific curiosities of his own design. Sometimes that means cutting his shirt up and playing the space station vacuum cleaner like a didgeridoo.

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Science off the Sphere: Goo!

Don uses his computer speakers to test the behavior of non-newtonian fluids in the weightless environment aboard the International Space Station. Answer the Challenge question at Physics Central for a chance for your name to be read from space!

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Science off the Sphere: Space Soundwaves

Don demonstrates water oscillations on a speaker in microgravity, and ZZ Top rocks the boat 250 miles above Earth.

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Science off the Sphere: Fun with Antibubbles

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.

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Science off the Sphere: Earth in Infrared

Don takes advantage of the view aboard the International Space Station and takes some amazing infrared photgraphs.

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Science off the Sphere: Lenses and Vortices

NASA Astronaut Don Pettit takes advantage of the weightless environment aboard the ISS to do diffusion and lens experiments with pure water. Distributed as part of a collaboration between NASA and the American Physical Society.

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Science Off The Sphere: Thin Film Physics

NASA astronaut Don Pettit examines the behavior of thin films of water aboard the International Space Station. Distributed as part of a collaboration between NASA and the American Physical Society.

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Science Off the Sphere: Drinking tea in microgravity

The crew aboard the International Space Station try out a novel new design in microgravity teacup technology.

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Science off the Sphere: Dancing Droplets

NASA Astronaut Don Pettit, aboard the International Space Station, demonstrates some interesting interplay between water droplets and charged knitting needles in microgravity.

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