An educational journey through space
Tour all eight planets of the solar system, discover the galaxies beyond, and meet the missions and explorers that carried us there.
Begin the tourEight worlds between 58 million and 4.5 billion kilometers from the Sun. Pick one to explore.
Did you know?
A day on Venus is longer than a year on Venus.
Island universes beyond our own
Andromeda Galaxy
Our nearest large galactic neighbor — 2.5 million light-years away, on a slow collision course with the Milky Way.
Pillars of Creation
Towering columns of gas and dust in the Eagle Nebula where new stars are being born.
Milky Way
Our home galaxy: over 100,000 light-years across with an estimated 100–400 billion stars.
Humanity's greatest journeys
Apollo 11 · 1969
The first crewed Moon landing — Neil Armstrong and Buzz Aldrin walked on the lunar surface.
Voyager 1 · 1977
The farthest human-made object, now beyond the solar system and still sending data home.
James Webb · 2021
The most powerful space telescope ever built, peering at the first galaxies of the early universe.
The people who went
Valentina Tereshkova
The first woman in space, orbiting Earth 48 times aboard Vostok 6 in 1963.
Neil Armstrong
Commander of Apollo 11 and the first human to set foot on the Moon.
Kalpana Chawla
The first woman of Indian origin in space, flying two missions aboard Space Shuttle Columbia.
