The Collaborative International Dictionary of English v.0.48:

Space \Space\ (sp[=a]s), n. [OE. space, F. espace, from L.
   spatium space; cf. Gr. spa^n to draw, to tear; perh. akin to
   E. span. Cf. Expatiate.]
   1. Extension, considered independently of anything which it
      may contain; that which makes extended objects conceivable
      and possible.
      [1913 Webster]

            Pure space is capable neither of resistance nor
            motion.                               --Locke.
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   2. Place, having more or less extension; room.
      [1913 Webster]

            They gave him chase, and hunted him as hare;
            Long had he no space to dwell [in].   --R. of
                                                  Brunne.
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            While I have time and space.          --Chaucer.
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   3. A quantity or portion of extension; distance from one
      thing to another; an interval between any two or more
      objects; as, the space between two stars or two hills; the
      sound was heard for the space of a mile.
      [1913 Webster]

            Put a space betwixt drove and drove.  --Gen. xxxii.
                                                  16.
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   4. Quantity of time; an interval between two points of time;
      duration; time. "Grace God gave him here, this land to
      keep long space." --R. of brunne.
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            Nine times the space that measures day and night.
                                                  --Milton.
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            God may defer his judgments for a time, and give a
            people a longer space of repentance.  --Tillotson.
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   5. A short time; a while. [R.] "To stay your deadly strife a
      space." --Spenser.
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   6. Walk; track; path; course. [Obs.]
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            This ilke [same] monk let old things pace,
            And held after the new world the space. --Chaucer.
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   7. (Print.)
      (a) A small piece of metal cast lower than a face type, so
          as not to receive the ink in printing, -- used to
          separate words or letters.
      (b) The distance or interval between words or letters in
          the lines, or between lines, as in books, on a
          computer screen, etc.
          [1913 Webster]

   Note: Spaces are of different thicknesses to enable the
         compositor to arrange the words at equal distances from
         each other in the same line.
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   8. (Mus.) One of the intervals, or open places, between the
      lines of the staff.
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   9. that portion of the universe outside the earth or its
      atmosphere; -- called also outer space.
      [PJC]

   Absolute space, Euclidian space, etc. See under
      Absolute, Euclidian, etc.

   deep space, the part of outer space which is beyond the
      limits of the solar system.

   Space line (Print.), a thin piece of metal used by printers
      to open the lines of type to a regular distance from each
      other, and for other purposes; a lead. --Hansard.

   Space rule (Print.), a fine, thin, short metal rule of the
      same height as the type, used in printing short lines in
      tabular matter.
      [1913 Webster]

WordNet (r) 3.0 (2006):

deep space
    n 1: any region in space outside the solar system

The Jargon File (version 4.4.7, 29 Dec 2003):

deep space
 n.

    1. Describes the notional location of any program that has gone off the
    trolley. Esp.: used of programs that just sit there silently grinding long
    after either failure or some output is expected. ?Uh oh. I should have
    gotten a prompt ten seconds ago. The program's in deep space somewhere.?
    Compare buzz, catatonic, hyperspace.

    2. The metaphorical location of a human so dazed and/or confused or caught
    up in some esoteric form of bogosity that he or she no longer responds
    coherently to normal communication. Compare page out.


The Free On-line Dictionary of Computing (30 December 2018):

deep space

   1. The notional location of any program that has gone off the
   trolley.  Especially used of programs that just sit there
   silently grinding long after either failure or some output is
   expected.  "Uh oh.  I should have had a prompt ten seconds
   ago.  The program's in deep space somewhere." Compare buzz,
   catatonic, hyperspace.

   2. The metaphorical location of a human so dazed and/or
   confused or caught up in some esoteric form of bogosity that
   he or she no longer responds coherently to normal
   communication.

   [Jargon File]