Obs. : 2015-04-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    5.428e+11
Venus      5.431e+11
Earth      4.864e+11
Mars       5.458e+11
Jupiter    4.961e+11
Saturn     4.756e+11
Uranus     5.428e+11
Neptune    5.086e+11
Pluto      4.778e+11