330 million light-years across · All Facts

330 million light-years across
The Boötes Void is a vast underdense region of space roughly 330 million light-years across.
SrcAstrophysical Journal (Kirshner et al., 1987)

Next evidence →76 yearsHalley's Comet returns on average every 76 years; last seen in 1986, next perihelion is in 2061.

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