sidereal or solar
2006-10-09 00:31:51 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
which year do they use?
2006-10-09 00:32:28 · update #1
does anybody know which of the standard years they used, solar or celestial, they are not the same lengths of time, this means different distance calculations.
2006-10-09 00:49:06 · update #2
The light-year is a measure of distance, not time. A light year is 5,865,696,000,000 miles (9,460,800,000,000 kilometers). That's a long way!
It is the total distance that a beam of light, moving in a straight line, travels in one year. To obtain an idea of the size of a light-year, take the circumference of the earth (24,900 miles), lay it out in a straight line, multiply the length of the line by 7.5 (the corresponding distance is one light-second), then place 31.6 million similar lines end to end. The resulting distance is almost 6 trillion (6,000,000,000,000) miles!
2006-10-09 00:32:43 · answer #1 · answered by Anonymous · 0⤊ 0⤋
A light year is the distance that light travels in one year. The speed of light is 186,287.5 miles per second. You can find out the number of seconds in a year by multiplying the number of seconds in a minute (60) by the number of minutes in an hour (60). Then multiply that by the number of hours in a day (24), and multiply that by the number of days in a year (approximately 365.25).
So we've got 60 x 60 = 3600 seconds in an hour
3600 x 24 = 86400 seconds in a day
86400 x 365.25 = 31,557,600 seconds in a year.
So a light year is about (I've rounded off a bit) 5,878,786,100,000 miles. That's almost 6 trillion miles. The distance from the earth to the Sun is 93 million miles. The distance to the nearest star is 4.3 light years, and the distance to the Andromeda galaxy is 2 million light years.
2006-10-09 07:53:46 · answer #2 · answered by Anonymous · 0⤊ 0⤋
10*12 10
2006-10-09 07:37:10 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Light year is a distance, not a time. A light year is the distance light travels in a year.
2006-10-09 07:40:02 · answer #4 · answered by DWReyes 3 · 0⤊ 0⤋
the distance that you go through by moving with the speed of light in one year
2006-10-09 07:39:47 · answer #5 · answered by haringrobert 3 · 0⤊ 0⤋
A light year is equal to 9,500 000 000 000 Kilometres. Down the shops twice?
2006-10-09 07:44:18 · answer #6 · answered by wheeliebin 6 · 0⤊ 0⤋
9454254955 x10^15 Metres long
2006-10-09 07:34:23 · answer #7 · answered by survival_paul 4 · 0⤊ 0⤋
a long time
2006-10-09 07:44:53 · answer #8 · answered by Anonymous · 0⤊ 1⤋
its same like a normal year, except with less calories.
2006-10-09 08:04:05 · answer #9 · answered by Anonymous · 0⤊ 0⤋
3600000000000000
2006-10-09 07:33:01 · answer #10 · answered by intan a 1 · 0⤊ 0⤋