Frontiers and Controversies in Astrophysics

  • Free
  • No certificate
Provider
Yale
Cost
Free
Certificate
No certificate
Format
Self-paced
Language
English
Subjects
Courses for Seniors
Source
Yale Online
Last verified
14 Sep 2026

Frontiers and Controversies in Astrophysics is Charles Bailyn's Spring 2007 course ASTR 160, recorded for Open Yale Courses as 24 lectures of about 50 minutes plus two short updates. It concentrates on three fast-moving areas. The first unit covers planetary orbits and the discovery of extra-solar planets by transits, microlensing and direct imaging; the second covers special and general relativity, tests of relativity, stellar-mass black holes, pulsars and supermassive black holes; the third covers Hubble's law and the Big Bang, dark matter, dark energy, supernovae and the cosmic microwave background.

The syllabus describes weekly problem sets that mix quantitative problems with essay questions, two in-class tests and a final exam, none of which is graded for online viewers. Lectures are available as streaming or downloadable video, audio and searchable transcripts, with reading assignments listed per lecture. Open Yale Courses is free, needs no registration and offers no certificate or credit.

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What you’ll learn

  • Explain how planets outside the solar system are detected by transits, microlensing and direct imaging
  • Describe stellar-mass and supermassive black holes and the relativity needed to understand them
  • Follow the evidence from Hubble's law to the Big Bang and the age of the universe
  • Distinguish dark matter from dark energy and the supernova evidence for an accelerating universe
  • Recognise what is currently unknown in each area and how astronomers are trying to find out

Who it’s for

Curious readers who want current astrophysics explained at introductory undergraduate level and are comfortable with some quantitative work in the problem sets.

Source: Yale Online (opens in a new tab) · Verified · Report a change

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