# Science in Space WHAT IS SCIENCE IN SPACE

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Science in Space

WHAT IS SCIENCE IN SPACE? Space Science in Space 2

WHERE DO WE DO SPACE SCIENCE? Cube Satellites International Space Station Earth Analogs 3

WHAT TYPES OF SCIENCE IS DONE IN SPACE? Plants l a c i Ph ys i d e m o i B cs M ic ro be s Data s id u l F 4

WHY DO SPACE SCIENCE? Space and gravity have many weird, unexpected effects! Crystals grown in space vs. on Earth Plants grown in space vs on Earth Match in space vs. on Earth 5

WHAT IS GRAVITY? • Quick Quiz: Which of these will have the most gravitational force? Hint: Think about both size and distance! A. A person and planet Earth B. Earth and the moon C. Earth and the sun D. Two people 6

QUIZ ANSWER A) A person and the Earth: Mass of a person ~ 70 kg, Mass of Earth = 6 x 1024 kg, Distance from Earth’s center to the crust = 6. 4 x 106 m, F = 684 N B) Earth and Moon: Mass of moon = 7. 35 x 1022 kg, Mass of Earth = 6 x 1024 kg, Distance from Earth’s center to moon’s center = 3. 9 x 108 m, F = 2 x 1020 N C) Earth and Sun: Mass of sun = 2 x 1030 kg, Mass of Earth = 6 x 1024 kg, Distance from Earth to the sun = 1. 5 x 1011 m, F = 3. 6 x 1022 N D) Two people: Mass of a person ~ 70 kg, Distance ~ 1 m apart, F = 3. 3 x 10 -7 N 7

WHAT EFFECT DOES GRAVITY HAVE ON … People? Plants? Fire? Microbes? Chemistry? Fluids 8

REFERENCES AND RESOURCES • Websites: asgsr. org, asgsrstudents. org • NASA Microgravity education resources, available online at: https: //www. nasa. gov/audience/foreducators/topnav/material s/listbytype/Microgravity_Teachers_Guide. html • 9