4.2 Light Years, the Nearest Star

SCALE · our closest neighbor

TARGET Proxima CentauriFASTEST PROBE WOULD NEED tens of thousands of years

The gap between our Sun and its nearest neighbor, Proxima Centauri: 4.2 light years of essentially nothing. Our fastest spacecraft would need longer than human civilization has existed to cross it. This single ring explains why the galaxy stays quiet: the distances between stars are the true wall, and light speed is the only key anyone knows of.

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3. The First Atoms 3. The Main Sequence Star 3C 273 4. The Dark Ages 4. The Red Giant 40 Eridani, Keid All objects in the library