Obs. : 2018-12-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.592e+11
Venus      3.543e+11
Earth      3.649e+11
Mars       3.699e+11
Jupiter    3.592e+11
Saturn     3.738e+11
Uranus     3.595e+11
Neptune    3.699e+11
Pluto      3.767e+11