Obs. : 2018-12-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.492e+11
Venus      3.501e+11
Earth      3.527e+11
Mars       3.580e+11
Jupiter    3.516e+11
Saturn     3.609e+11
Uranus     3.514e+11
Neptune    3.580e+11
Pluto      3.615e+11