Obs. : 2018-04-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.577e+11
Venus      3.475e+11
Earth      3.525e+11
Mars       3.572e+11
Jupiter    3.547e+11
Saturn     3.572e+11
Uranus     3.475e+11
Neptune    3.588e+11
Pluto      3.562e+11