39.2 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.