Obs. : 2019-08-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.470e+11
Venus      3.428e+11
Earth      3.494e+11
Mars       3.428e+11
Jupiter    3.447e+11
Saturn     3.449e+11
Uranus     3.541e+11
Neptune    3.494e+11
Pluto      3.449e+11