Obs. : 2017-01-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.165e+11
Venus      3.269e+11
Earth      3.357e+11
Mars       3.269e+11
Jupiter    3.251e+11
Saturn     3.166e+11
Uranus     3.277e+11
Neptune    3.251e+11
Pluto      3.179e+11