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  • Re: Review: Halcyon Years, Alastair Reynolds

    From Lawrence =?iso-8859-13?q?D=FFOliveiro?=@ldo@nz.invalid to rec.arts.sf.written on Wed Jun 24 02:17:50 2026
    From Newsgroup: rec.arts.sf.written

    On Thu, 11 Jun 2026 16:20:47 +1200, Titus G wrote:

    I can't get my head round huge numbers such as 2,200 years
    travelling at 99% of the speed of light being equivalent to more
    than 15,000 years in the rest of the universe.

    The Lorentz factor sounds about right <https://en.wikipedia.org/wiki/Length_contraction>:

    import math

    +| = lambda v : 1 / math.sqrt(1 - v * v)
    # Lorentz factor, v being speed as a fraction of c

    +|(.99)
    raA 7.088812050083354

    15,000 years ... are they headed for the centre of the galaxy?
    --- Synchronet 3.22a-Linux NewsLink 1.2
  • From Titus G@noone@nowhere.com to rec.arts.sf.written on Wed Jun 24 17:39:53 2026
    From Newsgroup: rec.arts.sf.written

    On 24/06/2026 14:17, Lawrence DrCOOliveiro wrote:
    On Thu, 11 Jun 2026 16:20:47 +1200, Titus G wrote:

    I can't get my head round huge numbers such as 2,200 years
    travelling at 99% of the speed of light being equivalent to more
    than 15,000 years in the rest of the universe.

    The Lorentz factor sounds about right <https://en.wikipedia.org/wiki/Length_contraction>:

    import math

    +| = lambda v : 1 / math.sqrt(1 - v * v)
    # Lorentz factor, v being speed as a fraction of c

    +|(.99)
    raA 7.088812050083354

    15,000 years ... are they headed for the centre of the galaxy?

    No. Away from the centre, far away.
    --- Synchronet 3.22a-Linux NewsLink 1.2