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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

USGS astrogeology maps are guiding Mars 2020 mission

Steven Sobieszczyk February 16, 2021

Bringing Mars rocks to Earth; scientist explains the tech, goals

Jim Bell February 11, 2021

UAE and China place missions into Mars orbit mere hours apart

Ken Kremer February 10, 2021

Why the International Space Station is riddled with bacteria

Roger Pickup February 8, 2021

NASA prepares for Seven Minutes of Terror; UAE and China also enroute to Mars

Ken Kremer February 5, 2021

Horgan passionate about studying Mars’ geology

Brian Huchel January 31, 2021

Getting to sleep in space is hard – and not exactly restful for the mind and body

Simon Archer January 29, 2021

SpaceX launches record 143 satellites into polar orbit

Ken Kremer January 27, 2021

Curious Kids

QuizMe: Space Quizzes

Interviews

Word Games & More

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Astronomy

Top 10 must-see list for new astronomers

Starting in astronomy: Recognising the night sky

Cygnus the swan

Starting in astronomy: Buying your first telescope

Earth

NASA launches Earth science challenges for general public

NASA testing supersonic parachute, inflatable decelerator

NASA selfie during Earth Day 2014

International Space Station

Launch of Expedition 37 to ISS

From zero to orbital velocity: Dragon delivers to ISS

International Space Station at a glance

NASA Socials: An out of this world journey

Lunar Exploration

Mars

Stuck on Mars: Comparing Mars analog simulations to ‘The Martian’

Flowing water exists on surface of Mars

MAVEN and MOM arrive safely at Mars

Buzz Aldrin: It’s time to colonize the Red Planet

Solar System

Universe

Ice and Stone

Comet of the Week: Delavan 1913f

Special Topic: Comet Tails

This Week in History: September 13-19

Comet of the Week: 21P/Giacobini-Zinner 1984e