Obs. : 2017-12-10
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.769e+11
Venus      3.618e+11
Earth      3.628e+11
Mars       3.402e+11
Jupiter    3.436e+11
Saturn     3.769e+11
Uranus     3.688e+11
Neptune    3.834e+11
Pluto      3.852e+11