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Is there an 'end' to what we think of as 'outer space'?

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Yes, space is not infinite. As you know, the space is expanding at the speed of light since the universe was created. The light moves about 300,000,000 meters in a second, that's 180,000 miles. Universe is 13. read more

Technically, “outer space”, by definition, ends at the top of the Earth’s atmosphere. In the other direction, our best evidence so far is that space is infinite in extent. The event horizons of black holes could be considered boundaries in that there is no casual connection between each side. read more

So we know there is more space than we can currently see, and that parts from it will become visible in the future. But we also know (or infer with extremely high confidence) that there are regions of space which we will never be able to see. Never, no matter how long we wait. read more

space is infinite, however we say that space has edges, these edges are the furthest bit of matter in a certain direction. beyond that is matterless space - a true vacum. so when a comet or something goes past the 'edge' of space, it creates a new edge. read more

From Quarks to Quasars explains that due to the theories of special relativity and cosmic inflation, the universe should be at least significantly larger than the edge of the known universe. The website explains the popular theory that the universe is constantly expanding, so there may be no precise end to outer space at all. read more

Technically, “outer space”, by definition, ends at the top of the Earth’s atmosphere. In the other direction, our best evidence so far is that space is infinite in extent. read more

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