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Sailing the Æther

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May. 13th, 2008 | 05:25 pm
location: West Hurley, New York
music: David Munrow - S'on Me Regarde

" The first indication that the sun might be emitting a "wind"
came from comet tails, observed to point away from the Sun,
whether the comet was approaching the Sun or whether it
was moving away. Kepler in the early 1600s guessed that
those tails were driven by the pressure of sunlight, and his
guess still holds true for the many comet tails which consist
of dust. "

~ from :

The Solar Wind

" The origins of sailing through space to explore the solar
system and beyond date all the way back to the early 17th
century with Johannes Kepler. Kepler believed that there
was a strong solar wind blowing through space that he
believed he observed when he saw the tails of comets
blowing around. Such a strong wind continuously blowing
has been disproved. The reason for the tail moving though
is found to be radiation pressure and this can be used to
propel a spacecraft with the light administering a continuous
'push'. So Kepler was actually very close to the truth four
centuries ago. "

~ from :

Solar Sail Origins

"Let us create vessels and sails fashioned for the heavenly
Æther, for there will be plenty of people who do not shrink
from the vastness of space."

~ Johannes Kepler, letter to Galileo Galilei, 1609.

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