NOTES c speed of light: 2.99792 x 105 km/sec ls light-second: 2.99792 x 105 km ld light-day: 2.590206837 x 1010 km ly light-year: 9.46 x 1012 km yr year: 3.1 x 107 seconds ve exhaust velocity v … Read more
NOTES c speed of light: 2.99792 x 105 km/sec ls light-second: 2.99792 x 105 km ld light-day: 2.590206837 x 1010 km ly light-year: 9.46 x 1012 km yr year: 3.1 x 107 seconds ve exhaust velocity v … Read more