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Inspiring Earth's Next Generation of Explorers Since 2012

Human Spaceflight ISS

Water recycling is key for ISS and Mars missions

November 21, 2025

Curious Kids Human Spaceflight ISS

How does the International Space Station stay in low Earth orbit?

November 19, 2025

Blue Origin Mars Rocket Launch

Successful New Glenn launch and landing to broaden spaceflight market

November 15, 2025

Curious Kids Sun

What are solar storms and the solar wind?

November 14, 2025

Carl Sagan’s scientific legacy extends far beyond ‘Cosmos’

November 7, 2025

Newest Articles

What is the universe expanding into if it’s already infinite?

Nicole Granucci November 5, 2025

How could an explosive Big Bang be the birth of our universe?

Michael Lam October 29, 2025

What is space made of? Explaining the components from radiation to dark matter

Nilakshi Veerabathina October 1, 2025

The tools Perseverance used to spot a potential sign of ancient life

Ari Koeppel September 26, 2025

Why does a rocket have to go 25,020 mph to escape Earth?

Benjamin L. Emerson September 24, 2025

Potential biosignature detected on Mars – What are these traces of life?

Amy J. Williams September 22, 2025

Can humans colonize Mars in the foreseeable future?

Anita Sengupta September 17, 2025

How was the Earth built?

Alexander E. Gates September 10, 2025

Curious Kids

How does the International Space Station stay in low Earth orbit?

What are solar storms and the solar wind?

What is the universe expanding into if it’s already infinite?

How could an explosive Big Bang be the birth of our universe?

What is space made of? Explaining the components from radiation to dark matter

Why does a rocket have to go 25,020 mph to escape Earth?

QuizMe: Space Quizzes

color image of pluto taken by nasa's new horizons spacecraft

QuizMe: Pluto

QuizMe: Mars Exploration

QuizMe: Mars, The Red Planet

QuizMe: SpaceX

QuizMe: Hubble Space Telescope

QuizMe: Project Apollo

QuizMe: Neil Armstrong

QuizMe: Our Solar System

Interviews

Soleil Moon Frye wants to take Punky Power into space

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

Al Worden on the honor of being an astronaut

Tim Peake ready to become United Kingdom’s official ISS resident

Word Games & More

Voyager Missions Word Search

Stay busy with NASA’s Artemis coloring and activity pages

Artemis I Mission Word Search

International Space Station Word Search

New NASA Posters Feature Cosmic Frights for Halloween

Ice and Stone 2020 Word Search #3

Project: Make a paper Mars helicopter

Mars Exploration Word Search

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Astronomy

Twinkling star reveals the secrets of plasma structures in our cosmic neighbourhood

When you wish upon a star, is it already dead?

Another puzzling interstellar object spotted whizzing through solar system

Early visions of Mars: 19th-century astronomer used science fiction to imagine the Red Planet

Earth

Why does a rocket have to go 25,020 mph to escape Earth?

How was the Earth built?

Why does everything look flat even though the Earth is round?

International Space Station

Water recycling is key for ISS and Mars missions

How does the International Space Station stay in low Earth orbit?

The SpaceX Falcon 9 rocket and Crew Dragon capsule stand vertically atop Launch Complex 39A at NASAs Kennedy Space Center in Florida ahead of an aborted launch attempt of the Axiom 4 commercial crew mission to the International Space Station. Credit: Ken Kremer

Axiom-4 commercial astronaut mission to ISS scrubs due to LOX leak

antares rocket soars into sky during launch from wallops island, virginia

S.S. Ellison Onizuka on way to ISS after successful launch

Lunar Exploration

Why do some planets have moons and others don’t?

How high could I jump on the Moon?

Our moon has been drifting away from Earth for 2.5 billion years

Mars

Successful New Glenn launch and landing to broaden spaceflight market

The tools Perseverance used to spot a potential sign of ancient life

Potential biosignature detected on Mars – What are these traces of life?

Can humans colonize Mars in the foreseeable future?

Solar System

Humanity needs nuclear-powered rockets to explore Mars and beyond

In what order did the planets in our solar system form?

Here’s how we can study interstellar objects passing through solar system

Universe

What is the universe expanding into if it’s already infinite?

How could an explosive Big Bang be the birth of our universe?

What is space made of? Explaining the components from radiation to dark matter

Does outer space end – or go on forever?

Ice and Stone

This Week in History: December 27-31

Comet of the Week: Kohoutek 1973f

Special Topic: Putting It All Together

This Week in History: December 20-26