The Astronomer Who Discovered the Universe Is Speeding Up

Adam Riess helped make one of modern astronomy’s most surprising discoveries: the expansion of the universe is accelerating rather than slowing under gravity. After studying at MIT and Harvard, he joined the High-z Supernova Search Team and used distant Type Ia supernovae to measure cosmic history. The 1998 result revealed the phenomenon now associated with dark energy and earned Riess a share of the 2011 Nobel Prize in Physics. This documentary follows the observations and the continuing Hubble-constant debate.

Cosmic acceleration changed the basic picture of the universe by implying that most of its energy lies in an unknown component called dark energy. Riess's work also continues through increasingly precise measurements of the Hubble constant, where disagreement between early- and late-universe methods may signal missing physics. His story shows how careful observations can defeat expectations and reopen fundamental questions. This documentary connects exploding stars, space telescopes and the unresolved fate of the.