Obs. : 2017-05-30
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.757e+11
Venus      3.827e+11
Earth      3.644e+11
Mars       3.696e+11
Jupiter    3.695e+11
Saturn     3.669e+11
Uranus     3.788e+11
Neptune    3.711e+11
Pluto      3.651e+11