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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

Japan’s Hayabusa2 brings back dust and rock samples from asteroid

Ken Kremer December 21, 2020

This Week in History: December 20-26

Alan Hale December 19, 2020

Comet of the Week: Lovejoy C/2011 W3

Alan Hale December 19, 2020

Special Topic: Formation of the Planets

Alan Hale December 19, 2020

Total solar eclipses reveal the dark and stormy side of the Sun we never see

Huw Morgan December 13, 2020

This Week in History: December 13-19

Alan Hale December 12, 2020

Comet of the Week: The Great Comet of 1680

Alan Hale December 12, 2020

Special Topic: “Families” and Groups

Alan Hale December 12, 2020

Curious Kids

QuizMe: Space Quizzes

Interviews

Word Games & More

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Astronomy

Earth

The Auroras of Planet Earth

Watching Earth’s winds, on a shoestring

CubeSats: Thinking inside the box, launching into space

International Space Station

Lunar Exploration

Mars

Cascading dunes visible in a Martian crater

Kim Lichtenberg spends her days sampling Martian soil and rocks

NASA’s MAVEN on way to Mars

India’s first Mars probe joins MAVEN in race to Red Planet

Solar System

Universe

Ice and Stone

This Week in History: August 30-September 5

Comet of the Week: SOLWIND 1 1979 XI

Special Topic: The Kuiper Belt

This Week in History: August 23-29