Obs. : 2018-05-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.817e+11
Venus      3.751e+11
Earth      3.628e+11
Mars       3.749e+11
Jupiter    3.628e+11
Saturn     3.713e+11
Uranus     3.866e+11
Neptune    3.797e+11
Pluto      3.749e+11