Obs. : 2017-06-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.639e+11
Venus      3.638e+11
Earth      3.626e+11
Mars       3.673e+11
Jupiter    3.709e+11
Saturn     3.613e+11
Uranus     3.638e+11
Neptune    3.606e+11
Pluto      3.605e+11