Obs. : 2017-12-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.819e+11
Venus      3.682e+11
Earth      3.606e+11
Mars       3.447e+11
Jupiter    3.477e+11
Saturn     3.819e+11
Uranus     3.665e+11
Neptune    3.840e+11
Pluto      3.881e+11