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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

Boeing Starliner orbital test flight to ISS targeted for December

Ken Kremer September 10, 2020

5 ways families can enjoy astronomy during the pandemic

Chris Impey September 5, 2020

This Week in History: September 6-12

Alan Hale September 5, 2020

Comet of the Week: 2I/Borisov I/2019 Q4

Alan Hale September 5, 2020

Special Topic: “Small Bodies” Moons

Alan Hale September 5, 2020

This Week in History: August 30-September 5

Alan Hale August 29, 2020

Comet of the Week: SOLWIND 1 1979 XI

Alan Hale August 29, 2020

Special Topic: The Kuiper Belt

Alan Hale August 29, 2020

Curious Kids

QuizMe: Space Quizzes

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Astronomy

Earth

International Space Station

Lunar Exploration

Mars

Solar System

Universe

Ice and Stone

Special Topic: Orbits and Future Returns

This Week in History: June 14-20

Comet of the Week: LINEAR C/2001 A2

Special Topic: Lunar and Planetary Impacts