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The WFIRST Microlensing Survey will enable the measurement of the compact object mass function over ten orders of magnitude, the detection of ~100,000 Transiting Planets, astroseismology of ~1,000,000 bulge giants, the detection of ~5000 trans-Neptunian objects, and measurement of parallaxes and proper motions of ~6,000,000 bulge and disk stars.
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