Because astronomers got bored typing 24,689,699,200,000 miles as the distance to Alpha Centauri.
Light can travel about 5.88 trillion miles in one lightyear.
one lightyear is equal to 5.87849981 × 1012 miles (thats 5 trillion, 878 billion, 499 million, 81 thousand miles).
Roughly 5,868,700,000,000 miles. (rounded)
A lightyear is the distance that light can travel in one year.
It is 6,000,000,000,000 miles long
Light can travel about 6 trillion miles in a year, so that distance is called a light-year.
1 lightyear is equal to approximately 16.098 billion miles when compared with the number of days.
One lightyear is about 6 trillion miles, so, it would take about 27000 years to travel one lightyear at 25000 MPH. 25,000 mph is about 7 miles a second. Light travels at about 186,000 miles a second. That's 26,600 times the speed your travelling. So if it takes light one year it is going to take your vehicle 26,600 years All the numbers are rounded to whole numbers. To get an accurate time then use the actual numbers.
A lot. 5,878,625,373,184 or around 6 trillion miles to a light year.
Fifty light years in miles: Over 300 trillion.
Lightyear isn't about time, it's distance. One lightyear is ten trillion kilometers.
Buzz Lightyear