Obs. : 2017-12-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.932e+11
Venus      3.932e+11
Earth      4.021e+11
Mars       3.867e+11
Jupiter    3.866e+11
Saturn     3.961e+11
Uranus     4.005e+11
Neptune    4.007e+11
Pluto      3.971e+11