Obs. : 2015-02-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.593e+11
Venus      3.861e+11
Earth      3.928e+11
Mars       3.826e+11
Jupiter    3.914e+11
Saturn     3.732e+11
Uranus     3.861e+11
Neptune    3.624e+11
Pluto      3.473e+11