Obs. : 2018-10-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.452e+11
Venus      3.452e+11
Earth      3.546e+11
Mars       3.517e+11
Jupiter    3.472e+11
Saturn     3.479e+11
Uranus     3.552e+11
Neptune    3.542e+11
Pluto      3.502e+11