Type: Interdimensional space
Usual Means of Access: Vibrational attunement
Dominant Lifeform: Unknown
Comments: Sub-space is a sidereal realm in which
distance is compressed enormously. Through the expedient
of warping into sub-space, faster-than-light travel can
be achieved without directly violating principles of relativity.
A journey through subspace can be extremely dangerous,
since the slightest miscalculation could put the traveler
into the heart of a star when he warps back into his own
reality. Reed Richards' initial investigations into the
mysteries of sub-space led him to the discovery of the
Negative Zone. Sub-Space is also called Hyperspace.
First Appearance: FANTASTIC FOUR #37