Obs. : 2017-12-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.777e+11
Venus      3.791e+11
Earth      3.566e+11
Mars       3.724e+11
Jupiter    3.764e+11
Saturn     3.777e+11
Uranus     3.570e+11
Neptune    3.610e+11
Pluto      3.736e+11