| 单词 | Hubble constant |
| 释义 | Hubble constant [`hǝb·ǝl ´kän·stǝnt] ASTROPHYSICS The rate at which the velocity of recession of the galaxies increases with distance; the value is about 30 kilometers per second per million light-years (or 3.2 × 10-18 s-1) with an uncertainty of about ±15 kilometers per second. |
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