Astronomy Picture of the Day
A long-running daily ritual of astronomy, wonder, and quiet explanation.
So Much More
There is a tendency to imagine exploration as something that happened in the past. Continents mapped and oceans crossed, but every image here suggests otherwise. The unknown has not disappeared. It has simply moved farther away. The universe remains full of places, phenomena, and questions waiting to be encountered. There is still so much to see.
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More to Explore
Eyes on the Solar System
Explore spacecraft, planets, and missions across a living 3D solar system.
Light Year FM
Explore an interactive journey through space where moving farther from Earth reveals progressively older radio broadcasts and music.
100,000 Stars
Drift through a three-dimensional map of nearby stars.