Obs. : 2018-07-30
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.045e+11
Venus      3.138e+11
Earth      3.000e+11
Mars       3.000e+11
Jupiter    3.100e+11
Saturn     3.029e+11
Uranus     2.931e+11
Neptune    2.937e+11
Pluto      3.019e+11