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Some Perspectives



 
 
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  #1  
Old February 11th 20, 01:39 AM posted to alt.astronomy
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Default Some Perspectives

Typical=20very=20close=20stars=20are=20like=20two= 20baseballs,=20o=
ne=20in=20NY=20City=20and=20the=20other=20in=20Chi cago.

The=20entire=20Andromeda=20galaxy,=20if=20viewed=2 0from=20Earth,=
=20would=20span=205=20degrees,=20or=20about=2010=2 0widths=20of=20e=
ither=20the=20Moon=20or=20Sun.


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  #3  
Old February 11th 20, 06:55 PM posted to alt.astronomy
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Default Some Perspectives


On your scale, the human is the same size of a virus. But the viruses
can travel from NY city to Chicago



And your point is ? ...
  #5  
Old February 12th 20, 11:01 PM posted to alt.astronomy
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Default Some Perspectives

=20

=20If=20a=20virus=20can=20travel=20from=20NY=20ci ty=20to=20Chicag=

o,=20then=20a=20Human=20could=20travel
=20from=20one=20star=20to=20another=20star



Well,=20keep=20in=20mind=20that=20the=20operative= 20equation=20is=
=20=20Distance=20=20=3d=20=20Speed=20=20x=20=20Tim e=20=20=20!=20Ev=
en=20if=20speed=20could=20approach=20light=20speed =20(=20which=20i=
s=20highly=20UN-likely=20),=20travel=20times=20to=20even=20close=
=20neighbors=20wuold=20be=20prohibitively=20long.= 20Which=20is=20t=
o=20say,=20there'll=20never=20be=20any=20practical =20travel=20amou=
ng=20the=20stars.=20Probably=20why=20we=20are=20ne ver=20visited=20=
by=20aliens.


  #6  
Old February 13th 20, 02:08 AM posted to alt.astronomy
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Default Some Perspectives

On Wednesday, February 12, 2020 at 2:01:09 PM UTC-8, wrote:


If a virus can travel from NY city to Chicago, then a Human could travel
from one star to another star



Well, keep in mind that the operative equation is Distance = Speed x Time ! Even if speed could approach light speed ( which is highly UN-likely ), travel times to even close neighbors wuold be prohibitively long....


Actually, a speed close to the speed of light would only take years and years from the perspective of observers here on Earth. To a traveler on that spaceship, the travel time would be lots faster. In fact, to anything traveling at the speed of light (which, of course, is impossible), the travel time would be ZERO. That's right, you could travel across the galaxy or even between galaxies in zero time, the distances involved would be irrelevant.
 




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