Obs. : 2018-03-24
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.579e+11
Venus      3.548e+11
Earth      3.439e+11
Mars       3.471e+11
Jupiter    3.457e+11
Saturn     3.487e+11
Uranus     3.548e+11
Neptune    3.599e+11
Pluto      3.507e+11