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Curious Kids Universe

Why is space so dark even though the Universe is filled with stars?

March 18, 2026

Curious Kids Universe

What is the smallest thing in the Universe?

March 10, 2026

Curious Kids Universe

How do atoms – the building blocks of everything – form?

March 4, 2026

NASA announces major changes to Artemis lunar mission plans

March 1, 2026

Human Spaceflight Mars Milky Way Moon Universe

2026 is poised to be an exciting year for space exploration

February 27, 2026

Newest Articles

Why does the Earth spin?

Silas Laycock February 25, 2026

Artemis II sending a crew around the Moon to lay groundwork for a future landing

Margaret Landis February 20, 2026

What is below Earth, since space is present in every direction?

Jeff Moersch February 17, 2026

First in Space Crossword

Chase Clark February 12, 2026

How can there be ice on the Moon?

Thomas Orlando February 3, 2026

Is the Moon drifting away from the Earth?

Stephen DiKerby January 27, 2026

Why does the Moon look close some nights and far away on others?

Silas Laycock January 20, 2026

How are dark matter and antimatter different?

Dipangkar Dutta January 13, 2026

Curious Kids

Why is space so dark even though the Universe is filled with stars?

What is the smallest thing in the Universe?

How do atoms – the building blocks of everything – form?

Why does the Earth spin?

What is below Earth, since space is present in every direction?

How can there be ice on the Moon?

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

First in Space Crossword

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

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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 the Earth spin?

What is below Earth, since space is present in every direction?

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

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

2026 is poised to be an exciting year for space exploration

Artemis II sending a crew around the Moon to lay groundwork for a future landing

How can there be ice on the Moon?

Mars

2026 is poised to be an exciting year for space exploration

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?

Solar System

What is below Earth, since space is present in every direction?

Humanity needs nuclear-powered rockets to explore Mars and beyond

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

Universe

Why is space so dark even though the Universe is filled with stars?

What is the smallest thing in the Universe?

How do atoms – the building blocks of everything – form?

2026 is poised to be an exciting year for space exploration

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