Obs. : 2013-07-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.071e+11
Venus      3.796e+11
Earth      4.147e+11
Mars       4.071e+11
Jupiter    4.071e+11
Saturn     4.006e+11
Uranus     4.104e+11
Neptune    4.130e+11
Pluto      4.147e+11