Obs. : 2014-04-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.675e+11
Venus      3.703e+11
Earth      3.672e+11
Mars       3.540e+11
Jupiter    3.546e+11
Saturn     3.672e+11
Uranus     3.675e+11
Neptune    3.703e+11
Pluto      3.825e+11