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A map of the solar system drawn to true scale, meaning most of your scrolling is spent crossing absolutely nothing.
Opens in a new tab. We do not control this site and it may have changed since we catalogued it.
If the Moon Were Only 1 Pixel sits in Space & Scale under Learn, and we have it filed as coffee break — five to fifteen minutes of proper attention. It reads as clever, brainy and funny.
Space, deep time and the size of things. Every site here exists to give you the one thing a textbook diagram cannot: actual scale.
Fly out through a mapped model of our stellar neighbourhood until the Sun is one unremarkable dot among thousands.
One astronomy image a day since 1995, each with a paragraph from an actual astronomer and an archive going back decades.
NASA's real-time 3D model of every mission in flight, letting you ride along with a probe on its actual trajectory.
Tells you exactly when the space station will pass over your garden, and which direction to look.
A calendar of every conjunction, eclipse and meteor shower coming up, with charts drawn for your own location.
Travel outwards at light speed while hearing which radio hits have reached each distance, oldest at the far edge.
Every photograph, video and audio recording NASA has released, searchable and free to use for anything.
The official live stream, which for long stretches is simply Earth turning below the space station.