Comets and asteroids
Chapter 1
Leftovers of cosmic creation
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Chapter 2
Cosmic visitors and Earthly impacts
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Chapter 3
Human missions to touch the stars
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Chapter 4
The future of space rocks
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YOUR GOAL
Master of Comets and asteroids
Ch 4 · The future of space rocks
teacher A billion years of history floating in the dark, We found the ancient water that ignited life's first spark.
Fun Fact
Psyche's value: If we brought asteroid Psyche's metals to Earth, they would theoretically destroy our global economy.
Glossary
planetary defense (noun)
A set of active measures designed to detect, track, and prevent cosmic bodies from impacting Earth. In 2022, NASA's DART mission demonstrated this capability by altering the orbital trajectory of asteroid Dimorphos.
A set of active measures designed to detect, track, and prevent cosmic bodies from impacting Earth. In 2022, NASA's DART mission demonstrated this capability by altering the orbital trajectory of asteroid Dimorphos.
Quiz
Which upcoming observatory in Chile will use a giant camera to scan for hazardous asteroids?
Quiz
What is the term for using resources found in space rather than launching them from Earth?
Quiz
Which material is NOT expected to be found in abundance on metallic asteroids like Psyche?
Quiz
What is the Yarkovsky effect that astronomers must calculate to predict asteroid paths?