Among the two artists, the better-known one had a retrospective at the city museum.

The artist, also known as Luna Blue, released a new album last week.

The committee will make known the results of the survey at tomorrow's meeting.

The well-known author surprised fans by publishing a mystery novel under a pseudonym.

Astronomers continue to map the galaxies across the known universe to better understand cosmic evolution.

Scientists compare data from different known universes to test the limits of physical laws.

Managers often ignore the unknown known — a certainty of unknown magnitude, consequence, structure, and probability characteristics that nonetheless shapes outcomes.

During the safety review, the team treated the equipment's remaining variability as a known unknown, documenting its magnitude, likely consequences, and probabilistic structure.

In the audit, we discovered several unknown knowns that had quietly influenced our decisions.

In planning the mission, the team catalogued the known unknowns and prioritized their investigation.