Obs. : 2018-07-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.402e+11
Venus      3.440e+11
Earth      3.337e+11
Mars       3.337e+11
Jupiter    3.419e+11
Saturn     3.374e+11
Uranus     3.294e+11
Neptune    3.283e+11
Pluto      3.337e+11