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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

10 Days in July: Trio of nations launch separate missions to Mars

Ken Kremer August 1, 2020

This Week in History: August 2-8

Alan Hale August 1, 2020

Comet of the Week: 67P/Churyomov-Gerasimenko

Alan Hale August 1, 2020

Special Topic: Life in Martian Meteorites?

Alan Hale August 1, 2020

This Week in History: July 26-August 1

Alan Hale July 25, 2020

Comet of the Week: NEOWISE C/2020 F3

Alan Hale July 25, 2020

Special Topic: Terrestrial Impact Craters

Alan Hale July 25, 2020

All About Mars

Lloyd Campbell July 20, 2020

Curious Kids

QuizMe: Space Quizzes

Interviews

Word Games & More

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Astronomy

Earth

International Space Station

Lunar Exploration

Mars

Solar System

Universe

Ice and Stone

Special Topic: Large Ground Meteorites

This Week in History: May 17-23

Comet of the Week: Tewfik X/1882 K1

Special Topic: Solar Eclipse Comets