Obs. : 2015-04-10
Planet	Ly alpha (photons/cm^2/sec)
Mercury    5.447e+11
Venus      5.252e+11
Earth      4.768e+11
Mars       5.374e+11
Jupiter    4.945e+11
Saturn     4.792e+11
Uranus     5.495e+11
Neptune    5.405e+11
Pluto      5.034e+11