Obs. : 2017-08-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.688e+11
Venus      3.853e+11
Earth      3.760e+11
Mars       3.688e+11
Jupiter    3.746e+11
Saturn     3.636e+11
Uranus     3.808e+11
Neptune    3.760e+11
Pluto      3.585e+11