Obs. : 2018-10-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.441e+11
Venus      3.494e+11
Earth      3.499e+11
Mars       3.464e+11
Jupiter    3.441e+11
Saturn     3.442e+11
Uranus     3.487e+11
Neptune    3.472e+11
Pluto      3.442e+11