Obs. : 2017-05-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.852e+11
Venus      3.823e+11
Earth      3.715e+11
Mars       3.951e+11
Jupiter    3.704e+11
Saturn     3.733e+11
Uranus     3.852e+11
Neptune    3.755e+11
Pluto      3.748e+11