Obs. : 2015-02-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.594e+11
Venus      4.871e+11
Earth      4.906e+11
Mars       4.871e+11
Jupiter    4.899e+11
Saturn     4.634e+11
Uranus     4.876e+11
Neptune    4.694e+11
Pluto      4.383e+11