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  • Star travel ? - Never !

    From casagiannoni@casagiannoni@optonline.net to alt.astronomy on Mon Jul 7 17:49:07 2025
    From Newsgroup: alt.astronomy

    All should realize, that travel to any other star, even a close one,
    will absolutely never happen.

    It all comes down to Distance = Speed x Time . Do the simple math.

    Even at near light speed ( which is Very unlikely ), the times would
    still be prohibitive.

    This is why, although intelligent space faring species likely abound
    throughout the universe, we are never visited by any.

    Our fastest spacecraft is slower than light by a factor of about
    30,000 .

    A one way trip to our very nearest neighbor star would take about 140
    millennia !

    Put in perspective, only 2 millennia would take us back to the height
    of the Roman empire, and 66,000 millennia would see the last of the
    dinosaurs.
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  • From casagiannoni@casagiannoni@optonline.net to alt.astronomy on Mon Jul 14 19:44:05 2025
    From Newsgroup: alt.astronomy


    Our fastest spacecraft is slower than light by a factor of about
    30,000 .

    Not sure of my estimate here.

    Just how fast is our fastest spacecraft ?

    Anyone ? ...
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  • From Kualinar@kuakinar@videotron.ca to alt.astronomy on Mon Jul 14 20:13:37 2025
    From Newsgroup: alt.astronomy

    Le 2025-07-14 |a 19:44, casagiannoni@optonline.net a |-crit-a:

    Our fastest spacecraft is slower than light by a factor of about
    30,000 .

    Not sure of my estimate here.

    Just how fast is our fastest spacecraft ?

    Anyone ? ...

    A 30 000th of the speed of light (about 300 000Km/s) is about 10
    Km/second. That's slower than the orbital speed of the ISS and other
    objects in low Earth orbit : 12 to 20Km/s depending on the altitude of
    the orbit. Crewed crafts reentering the atmosphere travel at around
    25Km/s, -#3Km/s.
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  • From casagiannoni@casagiannoni@optonline.net to alt.astronomy on Tue Jul 15 14:56:24 2025
    From Newsgroup: alt.astronomy


    Our fastest spacecraft is slower than light by a factor of about
    30,000 .

    Not sure of my estimate here.

    Just how fast is our fastest spacecraft ?

    Anyone ? ...

    A 30 000th of the speed of light (about 300 000Km/s) is about 10
    Km/second. That's slower than the orbital speed of the ISS and other
    objects in low Earth orbit : 12 to 20Km/s depending on the altitude of
    the orbit. Crewed crafts reentering the atmosphere travel at around
    25Km/s, #3Km/s.

    Thanks for info.

    So my estimate was on the low side, but travel to nearest star would
    be fewer, but still many millenia.
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  • From Phigan@phigan@mutinybbs.com.remove-j0f-this to All on Wed Jul 23 14:05:06 2025
    From Newsgroup: alt.astronomy

    Re: Star travel ? - Never !
    By: casagiannoni to alt.astronomy on Mon Jul 07 2025 17:49:07

    All should realize, that travel to any other star, even a close one,
    will absolutely never happen.

    It all comes down to Distance = Speed x Time . Do the simple math.

    Pfft, antiquated mathematics. All you have to do is bend space so that your origin and destination points converge! Duh.
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