Obs. : 2018-06-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.271e+11
Venus      3.330e+11
Earth      3.343e+11
Mars       3.211e+11
Jupiter    3.356e+11
Saturn     3.271e+11
Uranus     3.235e+11
Neptune    3.180e+11
Pluto      3.245e+11