you know like how far it takes light to travel in a year ?
2007-01-10 17:25:53 · 9 answers · asked by cyclonesteve1 2 in Science & Mathematics ➔ Astronomy & Space
86 millionmiles/sec do the math
2007-01-10 17:32:26 · answer #1 · answered by ? 4 · 0⤊ 2⤋
A light-year is equal to
(a) 9,460,730,472,580.8 km (about 9.461 Pm)
(b) about 5,878,625,373,183.61 statute miles
(c) about 63,241.077 AU (often approximated to 63,240 AU)
(d) about 0.306 601 394 parsecs
The actual, exact length of the light-year depends on the length of the reference year used in the calculation, and there is no wide consensus on the reference to be used. The figures above are based on a reference year of exactly 365.25 days (each of exactly 24 hours). This is the value recommended by the IAU. i.e. a Julian year not a Gregorian one,
Taking 6 trillion miles as a round figure, the nearest star (Proxima Centauri, 4.2 light years away) is 25 trillion miles away, 50 trillion for round trip.
2007-01-11 01:43:18 · answer #2 · answered by perseus 2 · 0⤊ 0⤋
186,000 mi/sec x 60 sec/min x 60 min/hr x 24 hr/day x 365 days/yr
or
11160000speed of lightmiles per sec
669600000time 60 = minute
40176000000times 60= hour
9.64224e+11times 24= day
3.5194176e+14times 365 = year
that is 3519417600000000000000 miles per year (I think)
I don't even know what that number is. If anyone can tell me if I am right or wrong I would be happy.
2007-01-11 01:38:23 · answer #3 · answered by Anonymous · 0⤊ 0⤋
About 5,865,696,000,000 miles as the crow flies, or the equivalent number of miles between services for a New York Taxi Cab!
2007-01-11 01:40:49 · answer #4 · answered by Ashleigh 7 · 1⤊ 0⤋
you can find how many miles there are in a light year by multiplying the speed of light by the time of one year.In doing this, you have to make sure that the units work out correctly, so if you give the speed of light in miles per second, you have to find the length of a year in seconds. The way this works out is:
speed of light = 186,000 mi/sec (approximately)
number of seconds in one year =
(number of days in one year)(number of hours in one day)
(number of minutes in one hour)(number of seconds in one minute)
= (365)(24)(60)(60) = 31,536,000
So to find a light year in miles, you multiply 186,000 mi/sec by
31,536,000 sec to find:
one light year = 5865696000000 miles or almost 6 trillion hehe
2007-01-11 01:35:46 · answer #5 · answered by bones 2 · 2⤊ 0⤋
Light travels at 186,000 miles per second.
60x60x24x365=seconds in a year 31,536,000 x 186,000 =
5,865,696,000,000 miles in a lightyear.
2007-01-11 01:33:57 · answer #6 · answered by Andi 6 · 2⤊ 0⤋
Turn on a light bulb and measure how far it shines then divide that by how long it takes you to measure it.
2007-01-11 02:00:01 · answer #7 · answered by Knuckledragger 4 · 0⤊ 0⤋
99% of the answers to question on this site are at wikipedia. Its amazing people don't look there first.
2007-01-11 10:54:33 · answer #8 · answered by gdodd10 2 · 1⤊ 0⤋
6 trillion.
2007-01-11 01:29:26 · answer #9 · answered by anonymous 4 · 0⤊ 0⤋