Chapter 1
Worlds of extreme ingredients
Chapter 2
Surviving in extreme cosmic neighborhoods
Chapter 3
Wild weather and molten surfaces
Chapter 4
The detective work of finding weird planets
YOUR GOAL
Master of Weirdest planets in the universe
Ch 1 · Worlds of extreme ingredients
artiteacher Worlds of extreme ingredients
Out in the cosmos, a planet so wild! (Oceans of lava, oh-oh!) Supersonic winds blow through the sky! (And it rains rocks, oh yeah!)
artiteacher Despite temperatures reaching 800 degrees Fahrenheit, this planet's immense gravity keeps its water compressed into solid, burning ice.
artiteacher This beautiful blue planet hides a deadly atmosphere where silicate winds howl at seven times the speed of sound.
BETA
artiteacher Sort each exoplanet by its bizarre traits to discover the universe's oddest worlds.
Fun Fact
Diamond planet: Astronomers estimate the diamond value of planet 55 Cancri e at 26.9 nonillion dollars, which is 384 quintillion times Earth's total GDP.
Glossary
exoplanet (noun)
A planet that orbits a star outside the solar system. In 2004, astronomers discovered 55 Cancri e, which likely contains a massive diamond core.
A planet that orbits a star outside the solar system. In 2004, astronomers discovered 55 Cancri e, which likely contains a massive diamond core.
Quiz
What keeps the ice on planet Gliese 436 b solid despite its scorching 800-degree temperature?
Quiz
Which telescope confirmed the cobalt-blue color of the glass-raining planet HD 189733b in 2013?
Quiz
How long does it take for the carbon-rich planet 55 Cancri e to complete one orbit around its star?
Quiz
What is the primary material believed to make up a third of the planet 55 Cancri e?