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Astronaut Edward M. (Mike) Fincke, Expedition 9 NASA science officer and flight engineer aboard the International Space Station, juggles fresh fruit in microgravity.
Courtesy of NASA.

What is microgravity? How is it created? And how does it impact astronauts during spaceflight? Gregory Vogt, EdD, provides answers to these and other questions about the near weightless conditions in space.

Author(s): David R. Caprette, PhD
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Introduction to Chemical Mixtures

Microscopic Characteristics of Mixtures

Behaviors of Mixtures

Components of a Solution

A Sample Solution

Volume, Amount, and Concentration

Why Do Skeletal Muscle Fibers Atrophy During Space Flight?

Human Muscle Response Under Different Conditions of Unloading

Portfolio of the NSBRI Muscle Team

Human Study

Measuring and Counting with a Light Microscope

Counting Chamber (Hemacytometer)

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