why cant spacecrafts travel at 1 million miles an hour?

No.12073355 ViewReplyOriginalReport
i just read that apollo 11 took 3 days to go to the moon despite it being just 200 000 miles away.
if spaceships can go 1 million miles an hour we'd reach the moon in just 20 minutes. why can we just go faster? theres no friction in space