Obs. : 2016-07-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.947e+11
Venus      3.954e+11
Earth      4.015e+11
Mars       3.953e+11
Jupiter    3.942e+11
Saturn     3.953e+11
Uranus     4.292e+11
Neptune    4.114e+11
Pluto      4.019e+11