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Inspiring Earth's Next Generation of Explorers Since 2012

Curious Kids Mars

Can humans colonize Mars in the foreseeable future?

September 17, 2025

Curious Kids Earth

How was the Earth built?

September 10, 2025

Curious Kids Universe

Does outer space end – or go on forever?

September 3, 2025

Curious Kids Earth

Why does everything look flat even though the Earth is round?

August 27, 2025

Human Spaceflight Mars

Nuclear rockets are twice as fast – but designing them isn’t easy

August 15, 2025

Newest Articles

This Week in History: May 31-June 6

Alan Hale May 30, 2020

Comet of the Week: SOHO C/1998 K10 and C/1998 K11

Alan Hale May 30, 2020

Special Topic: The K-T Event

Alan Hale May 30, 2020

QuizMe: SpaceX

Peder Halseide May 23, 2020

This Week in History: May 24-30

Alan Hale May 23, 2020

Comet of the Week: “Caesar’s Comet” C/42 K1

Alan Hale May 23, 2020

Special Topic: Large Ground Meteorites

Alan Hale May 23, 2020

Space Shuttle Atlantis Word Search

Twinkle Solanki May 16, 2020

Curious Kids

QuizMe: Space Quizzes

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Astronomy

Earth

International Space Station

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Ice and Stone

Special Topic: Ancient Ideas about Comets

Ice and Stone 2020 Companion Glossary

This Week in History: March 22-28

Comet of the Week: Hyakutake C/1996 B2