Obs. : 2019-01-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.534e+11
Venus      3.499e+11
Earth      3.505e+11
Mars       3.533e+11
Jupiter    3.502e+11
Saturn     3.534e+11
Uranus     3.510e+11
Neptune    3.548e+11
Pluto      3.550e+11