Obs. : 2017-05-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.888e+11
Venus      3.879e+11
Earth      3.691e+11
Mars       3.837e+11
Jupiter    3.608e+11
Saturn     3.716e+11
Uranus     3.888e+11
Neptune    3.860e+11
Pluto      3.750e+11