Interdimensional being

An extradimensional being or intelligence (also intra-dimensional and other-dimensional) is a type of theoretical or fictional entity existing in a dimension beyond our own. Such beings are common in science fiction, fantasy and the supernatural.

A theoretical type of starship engine, the Alcubierre drive, emulates superluminal travel by manipulating the fabric of spacetime. This can be achieved by amassing large quantities of pure energy in a section of spacetime.

However, the quantity of energy required would be completely impractical. Albert Einstein's theories certainly imply that the energy could be carried around as mass, yet the exact implementation of releasing the energy using materials other than antimatter is not terribly clear.

Since the Alcubierre drive manipulates spacetime, it is the closest theoretical space travel engine to interdimensional travel. Because modern science on Earth does not have a real concept of multiple dimensions beyond quantum mechanics and the many worlds interpretation, bending or changing spacetime itself to achieve faster-than-light travel appears to be the real-world equivalent of jumping through dimensional doorways in fiction.

In the Star Trek universe, wormhole theory states that if a section in the fabric of spacetime joins together with another section of spacetime, a direct connection can be made between the two, allowing speedy travel between the two (normally unrelated) spacetime coordinates. Black holes are one such way of stretching the fabric of spacetime; so it's theoretically possible to create wormholes using a pair of singularities, at least in the fictional universe of Star Trek. The NASA Web site has a somewhat dated article called "The Science of Star Trek", by physicist David Allen Batchelor (5 May 2009), which considers some of the implementations in Star Trek. He says it's "the only science fiction series crafted with such respect for real science and intelligent writing", with some "imaginary science" mixed in; and considers it to be the "only science fiction series that many scientists watch regularly", like himself. He says it's "more faithful to science than any other science fiction series ever shown on television".

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