Obs. : 2016-04-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.980e+11
Venus      4.015e+11
Earth      4.135e+11
Mars       4.136e+11
Jupiter    4.075e+11
Saturn     4.136e+11
Uranus     3.980e+11
Neptune    4.025e+11
Pluto      4.089e+11