Obs. : 2019-01-24
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.540e+11
Venus      3.424e+11
Earth      3.595e+11
Mars       3.578e+11
Jupiter    3.424e+11
Saturn     3.502e+11
Uranus     3.544e+11
Neptune    3.609e+11
Pluto      3.540e+11