The present simple passive or the past simple passiveThe Greek poet

The Greek poet Aeschylus was killed by a tortoise. It hit him on the head when it was dropped by a bird. The game of hockey was first played in Egypt over 4,000 years ago. The planet Pluto was not discovered until 1930.

Interrogative. 

Was the Greek poet Aeschylus  killed by a tortoise? Did It hit him on the head when it was dropped by a bird? Was the game of hockey  first played in Egypt over 4,000 years ago? Was the planet Pluto not discovered until 1930?