Permanent historical factsheet

Cosmic Transition from Deceleration

United States of America · Science / Astronomy. Chronological records rendered directly from the World History Database.

1Records
2004Date range
1Named people
1Places

Chronological records

2004

Adam Guy Riess2004

Hubble Space Telescope · Science / Astronomy

Riess uses very distant Type Ia supernovae to identify evidence that the universe once decelerated before dark energy became dominant and expansion began accelerating.

Names involved

Adam Guy Riess

Provenance

This factsheet is generated from stored World History Database records matching the country, broad category, detailed category and exact Event value shown above. Duplicate display records are collapsed; database wording is otherwise preserved. Source provenance varies by record, so formal academic citation should be checked against the relevant primary source, archive or specialist historical reference.