What is space time?

Question

What is space time?

Answer 1

Do you mean to space-time theory?

Well basically its a 2D [imagine its some sort of fabric]. And the theory about black holes, and possibly passages through space/time made by humans, is to travel ie. 200 milion light years without passing that amount of space. So idea is to bend 2D. If it was like this _ to bend to U and pas through passage. More at wikipedia:

http://en.wikipedia.org/wiki/Space_time

Answer 2

In physics, spacetime is any mathematical model that combines space and time into a single construct called the spacetime continuum. Spacetime is usually interpreted with space being three-dimensional and time playing the role of the fourth dimension. According to Euclidean space perception, the universe has three dimensions of space, and one dimension of time. By combining space and time into a single manifold, physicists have significantly simplified a large amount of physical theories, as well as described in a more uniform way the workings of the universe at both the supergalactic and subatomic levels.

Answer 3

Simply, spacetime is the fabric of the universe.

Answer 4

space and time

Answer 5

# dimensions of space (as we see) and 1 dimension of time is what makes the universe a 4dimensional entity.

Answer 6

the four dimensional system we perceive ourselves to live in.  space (lxwxh) plus time.