Obs. : 2017-08-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.465e+11
Venus      3.589e+11
Earth      3.768e+11
Mars       3.490e+11
Jupiter    3.643e+11
Saturn     3.742e+11
Uranus     3.663e+11
Neptune    3.746e+11
Pluto      3.760e+11