Obs. : 2016-04-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.008e+11
Venus      4.051e+11
Earth      3.814e+11
Mars       3.849e+11
Jupiter    3.759e+11
Saturn     3.849e+11
Uranus     4.051e+11
Neptune    3.978e+11
Pluto      3.910e+11