Editing Interstellar travel (section)

===== Alcubierre drive =====

{{Main|Alcubierre drive}}
In physics, the [[Alcubierre drive]] is based on an argument, within the framework of [[general relativity]] and without the introduction of [[wormhole]]s, that it is possible to modify spacetime in a way that allows a spaceship to travel with an arbitrarily large speed by a local expansion of spacetime behind the spaceship and an opposite contraction in front of it.<ref name="Warp Alcubierre">{{cite journal |title=The warp drive: hyper-fast travel within general relativity |journal=Classical and Quantum Gravity |year=1994 |last=Alcubierre |first=Miguel |volume=11 |issue=5 |doi=10.1088/0264-9381/11/5/001 |pages=L73–L77|arxiv = gr-qc/0009013 |bibcode = 1994CQGra..11L..73A |citeseerx=10.1.1.338.8690 |s2cid=4797900 }}</ref> Nevertheless, this concept would require the spaceship to incorporate a region of [[exotic matter]], or the hypothetical concept of [[negative mass]].<ref name="Warp Alcubierre" />