Obs. : 2017-12-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.733e+11
Venus      3.751e+11
Earth      3.657e+11
Mars       3.698e+11
Jupiter    3.698e+11
Saturn     3.751e+11
Uranus     3.633e+11
Neptune    3.680e+11
Pluto      3.789e+11