Obs. : 2018-07-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.519e+11
Venus      3.506e+11
Earth      3.636e+11
Mars       3.621e+11
Jupiter    3.627e+11
Saturn     3.636e+11
Uranus     3.562e+11
Neptune    3.589e+11
Pluto      3.629e+11