Obs. : 2016-01-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.351e+11
Venus      4.242e+11
Earth      4.171e+11
Mars       4.150e+11
Jupiter    4.169e+11
Saturn     4.203e+11
Uranus     4.107e+11
Neptune    4.188e+11
Pluto      4.327e+11