Obs. : 2018-08-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.924e+11
Venus      3.993e+11
Earth      4.004e+11
Mars       4.019e+11
Jupiter    3.988e+11
Saturn     4.003e+11
Uranus     4.186e+11
Neptune    4.018e+11
Pluto      4.017e+11