81 light-years is 476,160,000,000,000 miles.
the light from the sun takes 81/2 minutes to reach earth(=1a.u.). Light travels 186,000 miles per second. 510 seconds times 186,000=94,860,000. Earth is on average 94 million miles from the sun. Light travels 11,160,000 miles in 1 minute, 669,600,000 miles in 1 hour,16,070,400,000 in 1 day and 5,865,696,000,000 miles in one year(1 light year). Now divide 94,860,000 by 5,865,696,000,000 to get your answer in I believe a number that is in the hundredths (i.e.=.00whatever my calculator cannot handle numbers in the trillions).
Obviously the closest star is our own sun (Sol) at 149,597,892 kilometers (92,955,820.5 miles). Then comes Proxima Centauri at 4.2 light years, Alpha Centauri A and Alpha Centauri B at 4.3 ly, Barnard's Star at 6 ly and Wolf 359 at 7.7 ly.
Roughly/average 90 light years away. The seven stars in the Big Dipper constellation do not actually lie within the same plane; they are different distances from us. Below is a list of the stars and the approximate distance of each from our solar system. NAME & DISTANCE (in light years) Mizar 78 Merak 79 Megrez 81 Alioth 81 Phecda 84 Alkaid 101 Dubhe 124
If Megrez stopped shining today, it would take approximately 80-100 years before we no longer see its light in the night sky. This is because the star is around 80-100 light years away from Earth.
It takes approximately 8 minutes and 20 seconds for sunlight to travel from the sun to the Earth, regardless of the specific distance. This is due to the speed of light, which is about 300,000 kilometers per second.
81 miles=130.356864 kilometers The formula to convert miles to km: 81 mi* 1.609344 km 1 mi = 130.356864 km
81 miles = 130.36 kilometers See the Related Link below for a conversion calculator. The formula to convert miles to km: 81 mi*1.609344 km 1 mi=130.356864 km
31 to 51 miles. It's a good rule of thumb to multiply by 5/8 to convert from km to miles.
81%. to convert a number move the decimal two places to the right(eg. 81.0 becomes .81 making it 81%
Alioth is 81 light years away. So is Megrez, Mizar 83 light years away, and Alkaid is 210 light years away!
1.62 = 162/100 = 81/50 That is true whether they are inches, on miles or days.
81 miles is 130.36 kilometers.
the light from the sun takes 81/2 minutes to reach earth(=1a.u.). Light travels 186,000 miles per second. 510 seconds times 186,000=94,860,000. Earth is on average 94 million miles from the sun. Light travels 11,160,000 miles in 1 minute, 669,600,000 miles in 1 hour,16,070,400,000 in 1 day and 5,865,696,000,000 miles in one year(1 light year). Now divide 94,860,000 by 5,865,696,000,000 to get your answer in I believe a number that is in the hundredths (i.e.=.00whatever my calculator cannot handle numbers in the trillions).
To convert any fraction to a percentage multiply it by 100. 81/225 = 81/225 x 100 % = 36 %
81 miles = 130.356864 kilometers
81 km is equal to 50.3 miles.
Regroup? Seriously? It is convert! 81*100=8100