How big a circle would represent a distance of the nearest star about 4.5 light years. How big would planet earth be on the same scale
2006-08-21 06:03:23 · 7 answers · asked by bwadsp 5 in Science & Mathematics ➔ Astronomy & Space
If the eath was hollow and you were in the centre a 30 mile circle would look the same size as the sun. What size circle would give the same size as the eath as seen from 4.5 light years
2006-08-21 06:19:06 · update #1
Assuming a star the size of the sun, the image would be about half a micro-radian, or 30 millionths of a degree, across. That's about ten feet. On the same scale, earth would be about an inch across.
2006-08-21 06:27:45 · answer #1 · answered by Anonymous · 0⤊ 0⤋
It's a bit convoluted, but I understand your question.
The answer is 1/20th of an inch, give or take a couple of hundreths.
To figure this out, I used trigonometry to determine the angular size of the Earth as seen from 4.3 light years (the distance to Alpha Centauri.
Tangent theta = 8000 miles divided by 4.3 l.y.
I then used that angle to determine length the opposite side of of a triangle with an adjacent side of 4000 miles length (the radius of the Earth).
2006-08-21 13:29:02 · answer #2 · answered by Anonymous · 0⤊ 0⤋
the 30 degrees of space invasion to winter is done by uranus which followed the pathway of earth for a lengthy period of time almost from the glitter of its coming into the pathway to the 30 degrees of the obscureness of the shadowing the pathway of earth. its called winter. from cold glitter as its entering the pathway to the full coolness as its reached the apogee of the obscure 30 degrees in the fullness of the coldest.
2006-08-21 13:49:00 · answer #3 · answered by Anonymous · 0⤊ 1⤋
I'm sorry, but I used to teach celestial navigation and I can't give you an answer to your question because I need more information... and, judging from the criteria you gave, I'm not really certain you are correct to begin with.
2006-08-21 13:30:08 · answer #4 · answered by Anonymous · 0⤊ 0⤋
you are clearly madder than a box of frogs. good luck with that 30 mile ping pong ball
2006-08-21 17:53:20 · answer #5 · answered by Anonymous · 0⤊ 0⤋
I would need more statistics to answer that question. Also I want more than ten points because it sounds like I would be doing your job.
2006-08-21 13:16:51 · answer #6 · answered by ? 3 · 1⤊ 0⤋
Can you be more clear
2006-08-21 13:15:12 · answer #7 · answered by Dr M 5 · 0⤊ 0⤋