Obs. : 2017-01-22
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.356e+11
Venus      3.370e+11
Earth      3.511e+11
Mars       3.370e+11
Jupiter    3.496e+11
Saturn     3.373e+11
Uranus     3.384e+11
Neptune    3.369e+11
Pluto      3.356e+11