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38.2 Astronomy and Astrophysics

GSL_CONST_MKSA_ASTRONOMICAL_UNIT
The length of 1 astronomical unit (mean earth-sun distance), au.
GSL_CONST_MKSA_GRAVITATIONAL_CONSTANT
The gravitational constant, G.
GSL_CONST_MKSA_LIGHT_YEAR
The distance of 1 light-year, ly.
GSL_CONST_MKSA_PARSEC
The distance of 1 parsec, pc.
GSL_CONST_MKSA_GRAV_ACCEL
The standard gravitational acceleration on Earth, g.
GSL_CONST_MKSA_SOLAR_MASS
The mass of the Sun.