I have treid to imagine but can not do it

There is a one theory out there that says space is like a donut ring with a big black whole in the middle... If you start at one point & keep going, you'll eventually end up at the same place you started... But like I said, it's just a theory... Also with all the planets gravity, eventually you'll run into something... Size of some of the planets are over 100 to even 1,000 times bigger than that of earth... Even the lights will bend as it travels, like light bending when it hits the water... So actually, going straight in space, especially at high speed, isn't really possible... At one point or another, trajectory of an object is bound to curve... Also, there's another theory that space is constantly expending & currently, there is no fast enough ship to catch up to the end of it... Basically, space had few billion years head start... So even if there was end of the space, it would be pretty difficult to make up billions of years of space expending... Could you imagine if you were driving for billions of years & told someone to just start driving & see if he/she can catch up? How long that would take? Obviously that wouldn't really happen in our life time even if that theory was true...

ha ha very good question when i last checked it is 999999999999999999999999999999999light years away from our galaxy milky way or you can short cut through back side of our galaxy ,jump over the fence then the end is only about 44444444444444444444444444444444444 light years.