Obs. : 2018-05-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.738e+11
Venus      3.613e+11
Earth      3.593e+11
Mars       3.611e+11
Jupiter    3.593e+11
Saturn     3.595e+11
Uranus     3.738e+11
Neptune    3.645e+11
Pluto      3.579e+11