Space Numbers
1 astronomical unit (AU or au) = 92,955,807.3 miles
a unit of length effectively equal to the average, or mean, distance between Earth and the Sun, defined as 149,597,870.7 km or (92,955,807.3 miles).
Speed of light in a vacuum = 299,792,458 meters per second
The speed of light traveling through a vacuum is exactly 299,792,458 meters (983,571,056 feet) per second. That's about 186,282 miles per second — a universal constant known in equations as "c," or light speed.
1 Light Year = 5,878,612,843,200 miles
5.8786128432 × 10(12th power)
5.8786128432e12
1 Parsec = approximately equal to 3.26 light-years or 206,265 astronomical units (AU), i.e. 30.9 trillion kilometres (19.2 trillion miles) [19,173,529,592,734.5 miles]
a unit of length effectively equal to the average, or mean, distance between Earth and the Sun, defined as 149,597,870.7 km or (92,955,807.3 miles).
Speed of light in a vacuum = 299,792,458 meters per second
The speed of light traveling through a vacuum is exactly 299,792,458 meters (983,571,056 feet) per second. That's about 186,282 miles per second — a universal constant known in equations as "c," or light speed.
1 Light Year = 5,878,612,843,200 miles
5.8786128432 × 10(12th power)
5.8786128432e12
1 Parsec = approximately equal to 3.26 light-years or 206,265 astronomical units (AU), i.e. 30.9 trillion kilometres (19.2 trillion miles) [19,173,529,592,734.5 miles]
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