Obs. : 2017-07-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.650e+11
Venus      3.477e+11
Earth      3.548e+11
Mars       3.479e+11
Jupiter    3.768e+11
Saturn     3.619e+11
Uranus     3.460e+11
Neptune    3.465e+11
Pluto      3.548e+11