The universe is 100 million years older than thought, according to the best-ever map of the oldest light in space.
The adjustment brings the universe's age to 13.82 billion years, and means space and time are expanding slightly slower than scientists thought.
These discoveries come from a new all-sky map of ancient cosmic light by Europe's Planck mission, which has measured what's called the cosmic microwave background in greater detail than ever before.
Planck program scientist at NASA Headquarters in Washington, in a statement. NASA contributed technology for the Planck spacecraft, which is managed by the European Space Agency. "These measurements are profoundly important to many areas of science, as well as future space missions."