Obs. : 2018-12-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.465e+11
Venus      3.433e+11
Earth      3.469e+11
Mars       3.528e+11
Jupiter    3.465e+11
Saturn     3.538e+11
Uranus     3.460e+11
Neptune    3.504e+11
Pluto      3.565e+11