Obs. : 2017-06-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.654e+11
Venus      3.723e+11
Earth      3.690e+11
Mars       3.654e+11
Jupiter    3.719e+11
Saturn     3.679e+11
Uranus     3.710e+11
Neptune    3.695e+11
Pluto      3.695e+11