151. The rotation and orbit of the Earth and the Sun's motion through space would make it impossible to take regular star trail photos
"If Earth were a spinning ball revolving around the Sun it would actually be impossible for star-trail photos to show perfect circles even at the North Pole! Since the Earth is also allegedly moving 67,000 mph around the Sun, the Sun moving 500,000 mph around the Milky Way, and the entire galaxy going 670,000,000 mph, these four contradictory motions would make star-trail time-lapses all show irregular curved lines."
Dubay does not understand far away stars are and how that affects our ability to see their motion.
It is true, the Earth orbits the Sun, The Sun orbits our Galaxy, the stars within our galaxy move relative to each other in seemingly random directions and our galaxy moves relative to other galaxies in relatively random directions.
However, what Dubay fails to understand yet again is that the distances involved are absolutely huge.
One of the nearest stars, Alpha Centauri, is 4.37 light years or 25,691,230,000,000 miles away. The diameter of the Earth’s orbit around the Sun is 189,000,000 miles. In proportion if the distance to the nearest star was 1 mile, the side to side motion earth as it moved around the sun would be only about 0.47 inches. The angular difference of the star viewed from either side of the Sun is a minuscule 0.0004 degrees.
Obviously this is way too small to be noticeable with the naked eye, and far too small to make a difference to the star trails photographed over a 24 hour period.
In reality, we are not moving that fast relative to Alpha Centauri so the actual angular difference in a year is only 0.001 degrees. In other words it would take 1000 years for Alpha Centauri to move 1 degree in the night sky.
Now consider that the further away the stars are the smaller the angular difference will be and that
the average distance of the visible stars is a massive 185 light years or 1,087,615,000,000,000
miles. That is 42 times more distant than Alpha Centauri.
It is impossible for these tiny motions to be visible in star trail photos.
So once again Dubay’s assertion that observation does not match up with science's conception of the universe is show to be completely false.
This link takes you to a nice animation that gives you an idea of the scale of the Universe.
http://scaleofuniverse.com/
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Dubay does not understand far away stars are and how that affects our ability to see their motion.
It is true, the Earth orbits the Sun, The Sun orbits our Galaxy, the stars within our galaxy move relative to each other in seemingly random directions and our galaxy moves relative to other galaxies in relatively random directions.
However, what Dubay fails to understand yet again is that the distances involved are absolutely huge.
The Earth's orbit around the Sun
Let us first consider the movement that we would see caused by the Earth's orbit of SunOne of the nearest stars, Alpha Centauri, is 4.37 light years or 25,691,230,000,000 miles away. The diameter of the Earth’s orbit around the Sun is 189,000,000 miles. In proportion if the distance to the nearest star was 1 mile, the side to side motion earth as it moved around the sun would be only about 0.47 inches. The angular difference of the star viewed from either side of the Sun is a minuscule 0.0004 degrees.
Obviously this is way too small to be noticeable with the naked eye, and far too small to make a difference to the star trails photographed over a 24 hour period.
The Sun's motion relative to the stars
Let us assume a worst case scenario and use Dubay's figure for our Sun's velocity (500,000 miles per hour) and assume that is the speed of the Sun relative to Alpha Centauri. In one year our Sun will have travelled 4,380,000,000 miles. The angular difference in that case would be 0.009 degrees. Again too small to see with the naked eye.In reality, we are not moving that fast relative to Alpha Centauri so the actual angular difference in a year is only 0.001 degrees. In other words it would take 1000 years for Alpha Centauri to move 1 degree in the night sky.
Now consider that the further away the stars are the smaller the angular difference will be and that
the average distance of the visible stars is a massive 185 light years or 1,087,615,000,000,000
miles. That is 42 times more distant than Alpha Centauri.
It is impossible for these tiny motions to be visible in star trail photos.
So once again Dubay’s assertion that observation does not match up with science's conception of the universe is show to be completely false.
This link takes you to a nice animation that gives you an idea of the scale of the Universe.
http://scaleofuniverse.com/
< Prev 151-160 Next >
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