Obs. : 2018-05-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.814e+11
Venus      3.846e+11
Earth      3.816e+11
Mars       3.788e+11
Jupiter    3.834e+11
Saturn     3.803e+11
Uranus     3.786e+11
Neptune    3.751e+11
Pluto      3.803e+11