Obs. : 2015-04-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.888e+11
Venus      4.883e+11
Earth      5.504e+11
Mars       4.888e+11
Jupiter    5.002e+11
Saturn     5.428e+11
Uranus     4.895e+11
Neptune    4.934e+11
Pluto      5.140e+11