Obs. : 2019-07-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.418e+11
Venus      3.418e+11
Earth      3.486e+11
Mars       3.450e+11
Jupiter    3.538e+11
Saturn     3.486e+11
Uranus     3.381e+11
Neptune    3.352e+11
Pluto      3.486e+11