Obs. : 2015-02-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.998e+11
Venus      4.845e+11
Earth      5.322e+11
Mars       4.868e+11
Jupiter    5.313e+11
Saturn     5.165e+11
Uranus     4.909e+11
Neptune    4.845e+11
Pluto      5.046e+11