Obs. : 2018-01-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.228e+11
Venus      3.295e+11
Earth      3.324e+11
Mars       3.253e+11
Jupiter    3.253e+11
Saturn     3.228e+11
Uranus     3.294e+11
Neptune    3.313e+11
Pluto      3.245e+11