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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): Roberta Anding, MS, RD/LD, CDE
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Lack of Physical Activity Contributes to Obesity

Let’s Talk About It

The Science of Breathing

The Science of Breathing (cont.)

Flu: An Introduction

Homeostatic Mechanism

Tissues in the Human Body

Human Skeleton Diagram

Human Muscular System

Three Types of Human Muscle Tissue

Skeletal Muscle Contraction

Diagram of the Human Heart

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