Obs. : 2017-01-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    2.850e+11
Venus      3.016e+11
Earth      2.874e+11
Mars       3.016e+11
Jupiter    2.785e+11
Saturn     2.808e+11
Uranus     2.946e+11
Neptune    3.016e+11
Pluto      2.912e+11