This is the 1250th most frequent Russian word.
открыли
"Opened."
Here, 'открыли' means 'opened' and refers to an inauguration or making accessible.
Сегодня мы открыли новую библиотеку.
Today we opened a new library.
In this context, 'открыли' means 'discovered' or 'found something new that wasn't known before.
Учёные открыли новую звезду.
Scientists discovered a new star.
Here, 'открыли' means 'opened' in its literal sense, referring to allowing access by moving the door.