=20
=20=20Nothing=20in=20physics=20or=20engineering= 20prevents=20it,=
=20more=20so=20for=20a=20spacefaring
=20=20civilizations=20which,=20you'd=20assume,=2 0can=20command=
=20enough=20energy=20to=20do=20this
=20=20at=20little=20relative=20expense=20(withou t=20any=20breakt=
hrough=20in=20physics).


As=20i've=20stated,=20even=20at=20near=20light=20s peed,=20which=20=
is=20extreemly=20unlikely,=20travel=20times=20woul d=20be
prohibitively=20long.

Do=20the=20simple=20math.=20=20Distance=20=3d=20Sp eed=20x=20Time=
=20=20!