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Inspiring Earth's Next Generation of Explorers Since 2012

Astronomy Milky Way

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

July 28, 2025

Curious Kids Universe

How many stars are there in the Universe?

July 25, 2025

Curious Kids Moon

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

July 24, 2025

Curious Kids Earth

How has the inside of the Earth stayed hot for billions of years?

July 23, 2025

Curious Kids Mars

Is Mars really as red as people say it is?

July 22, 2025

Newest Articles

NASA announces Artemis II crew as rocket’s core stage completes assembly

Ken Kremer April 5, 2023

Relativity Space launches Terran 1, world’s first 3D printed rocket

Ken Kremer March 28, 2023

Unusual, long-lasting gamma-ray burst challenges theories

Eleonora Troja December 23, 2022

Orion spacecraft with Moon closeup and crescent Earth in distance

Orion takes a selfie on way to Sunday splashdown

Ken Kremer December 8, 2022

orion spacecraft with moon and earth in photo

Orion conducts lunar flyby; captures Earth and Moon in photos

Ken Kremer November 22, 2022

smoke trail of artemis rocket launch into florida's night sky

Artemis era is underway as test flight launches to the Moon

Ken Kremer November 21, 2022

illustration of SLS rocket soaring above clouds

Artemis 1: Here’s what to expect and why it’s important

Jack Burns November 14, 2022

Hurricane delays launch of Artemis to Nov. 16

Ken Kremer November 13, 2022

Shelf Space

QuizMe: Space Quizzes

Interviews

Word Games & More

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Astronomy

Hubble’s Top 100 images

Hubble Space Telescope: Showing humanity the Universe for 25 years

How they do it: Processing Hubble images from B&W into stunning full-color

Hubble, bubble, toil and trouble

Earth

America’s gateway to space: LC-39A

India lofts 104 satellites to set single-launch record

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

International Space Station

Dragon Endeavour delivers astronauts to ISS after historic flight

Christina Koch Breaks Record for Longest Female Spaceflight

Koch and Meir complete historic first all-female spacewalk

NASA’s first women-only spacewalk to occur this week

Lunar Exploration

Al Worden on the honor of being an astronaut

A look at ‘The Last Man on the Moon’

Apollo 11: A giant leap for mankind

Mars

All About Mars

Gazing upon Mars

Mars 2020 Mission Overview

Building for Mars

Solar System

Deep Space Network: Finding the signal for 50 years

Eight essential facts about NASA’s Deep Space Network

Rosetta is deciphering comet’s tale

Universe

Planets rich in carbon  may be waterless worlds

Radio bursts discovered from beyond our galaxy

NASA’s NuSTAR helps solve riddle of black hole spin

Planck mission brings universe into sharp focus

Ice and Stone

Special Topic: Comets and Meteor Showers

This Week in History: November 8-14

Comet of the Week: “Tycho Brahe’s Comet” C/1577 V1

Special Topic: The Far Outer Solar System