In 1994, Canadian astronomers discovered that Vega was rotating once on its axis every eleven hours, instead of five days as previously thought.
(Canadian astronomers; discovered; that Vega was rotating once on its axis every eleven hours, instead of five days; T:In 1994) Context(Canadian astronomers discovered,List([9, 40))):(Vega; was rotating; T:once; on its axis every eleven hours)
Canadian astronomers discovered,List([9, 40))
Canadian astronomers Vega
discovered was rotating
that Vega was rotating once on its axis every eleven hours, instead of five days T:In 1994
T:once on its axis every eleven hours