space medium fill in the blank

The Vera C. Rubin Observatory's LSST will survey the entire visible sky every _______ nights.

  1. 1-2
  2. 3-4
  3. 7-10
  4. 30

Answer: 3-4

LSST's wide-field camera images 20,000 deg² every 3-4 nights, detecting transients, moving objects, and dark matter via weak lensing.

Topic Astronomy - Surveys
Exam Relevance UPSC Prelims, SSC CGL

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