Obs. : 2017-06-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.651e+11
Venus      3.605e+11
Earth      3.622e+11
Mars       3.651e+11
Jupiter    3.647e+11
Saturn     3.622e+11
Uranus     3.575e+11
Neptune    3.506e+11
Pluto      3.596e+11