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Episode Synopsis

The expanding universe is humanity's monumental discovery. Beginning with something infinitesimally small, the universe has become something majestically large. How could this happen? What could this mean?

Episode Segments

1. Alan H. Guth
2. Paul J. Steinhardt
3. Saul Perlmutter
4. George F. R. Ellis
5. Andrei Linde

What does an Expanding Universe Mean?