It is impossible for anyone to grasp the concept of infinity. Infinity is not a number or anything for that matter, infinity is a concept. Think of the biggest number you know, than add one, you can keep adding one an infinite amount of times to make it and finally big number. There is no number close to infinity, and there is no number bigger then infinity. You might think that infinity is the biggest number but it is not. Infinity is every number and everything. If space actually is infinitely big than do you really think that there is not something else out there.
http://blogs.discovermagazine.com/crux/2015/02/20/infinity-ruining-physics/
This relates to engineering because infinity applies to many engineering projects and is something that scientists and engineers have tried to understand.
