Obs. : 2018-07-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.453e+11
Venus      3.517e+11
Earth      3.589e+11
Mars       3.600e+11
Jupiter    3.584e+11
Saturn     3.589e+11
Uranus     3.579e+11
Neptune    3.590e+11
Pluto      3.585e+11