Obs. : 2017-02-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.467e+11
Venus      3.749e+11
Earth      3.609e+11
Mars       3.732e+11
Jupiter    3.485e+11
Saturn     3.380e+11
Uranus     3.732e+11
Neptune    3.743e+11
Pluto      3.408e+11