How Many Hours Are There in a Galactic Year?

-- | December 14, 2015

Question: How many hours does the earth orbit the milky way in 3 years  — Xondra

Answer: I suspect that you are asking about the length of a “galactic year”, or the time that it takes the Earth to orbit the center of the Milky Way galaxy, which is 226 million Earth years.  Multiply this by the number of hours in a year (about 24 hours per day times 365.25 days per year), and you get just under 2 trillion hours.

Jeff Mangum