The amount by which a measured or calculated mass falls short of an expected or inferred mass; (Astronomy) the discrepancy between the mass of a…
| 单词 | θ1633 |
| 释义 | the world > the universe > [noun] > missing mass (2) missing mass1889 The amount by which a measured or calculated mass falls short of an expected or inferred mass; (Astronomy) the discrepancy between the mass of a… dark matter1932 Astronomy. Matter which can be inferred to exist from its gravitational effects but is not observable by visible light. In later use chiefly: spec.… |
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