{
  "course": {
    "courseNumber": "ASTR 476",
    "courseCode": "ASTR476",
    "title": "Observational Cosmology",
    "credits": 3,
    "term": "Year 4 elective",
    "yearInCurriculum": 4,
    "prerequisites": "ASTR 420 or concurrent enrollment",
    "description": "Observational foundations of modern cosmology, including supernovae, BAO, the CMB, weak lensing, growth, parameter inference, and survey systematics."
  },
  "status": {
    "stage": "approved for review release",
    "reviewStatus": "Approved for review release; not yet approved for instructional use",
    "lastUpdated": "2026-09-25"
  },
  "counts": {
    "slides": 14,
    "notes": 14,
    "labs": 7,
    "problemSets": 7,
    "solutionKeys": 7,
    "assessmentInstructions": 7
  },
  "cadence": {
    "lectures": 14,
    "labs": 7,
    "problemSets": 7,
    "rationale": "Each lab and problem set spans two lecture modules and is due at the end of the second week: Weeks 2, 4, 6, 8, 10, 12, and 14."
  },
  "environment": {
    "python": "3.14.6",
    "requirements": "requirements.txt"
  },
  "dataProvenance": {
    "level1": "Pantheon+SH0ES public table and full covariance fetched and hashed during production; an 18-row redshift-stratified excerpt and exactly aligned covariance block are included.",
    "level2": "Planck 2018, BOSS DR12, and DES Y3 published summary values; not raw survey likelihoods. Individual references and verification limits are in reference-log.md.",
    "level3": "FLRW/growth model curves, synthetic parameter ellipses, theoretical CMB schematic, and schematic error-budget weights; none are observations."
  }
}