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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

Comet of the Week: Hale-Bopp C/1995 O1

Alan Hale July 18, 2020

Special Topic: Discoveries and Surveys

Alan Hale July 18, 2020

Scientists on their favorite science fiction

The Conversation July 16, 2020

QuizMe: Mars, The Red Planet

Avi Patel July 12, 2020

Meteorites contain clues about geology of Mars

Arya Udry July 11, 2020

This Week in History: July 12-18

Alan Hale July 11, 2020

Comet of the Week: Shoemaker-Levy 9 1993e

Alan Hale July 11, 2020

Special Topic: Pluto

Alan Hale July 11, 2020

Curious Kids

QuizMe: Space Quizzes

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Astronomy

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Lunar Exploration

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Ice and Stone

Comet of the Week: ATLAS C/2019 Y4

Special Topic: Occultations by Asteroids

This Week in History: April 26-May 2

Comet of the Week: Bradfield C/2004 F4