Obs. : 2016-06-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.988e+11
Venus      4.003e+11
Earth      3.929e+11
Mars       3.936e+11
Jupiter    3.977e+11
Saturn     3.929e+11
Uranus     4.007e+11
Neptune    3.967e+11
Pluto      3.912e+11