Obs. : 2017-02-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.138e+11
Venus      3.120e+11
Earth      2.958e+11
Mars       3.120e+11
Jupiter    2.920e+11
Saturn     2.993e+11
Uranus     3.063e+11
Neptune    3.199e+11
Pluto      3.138e+11