Obs. : 2018-10-22
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.437e+11
Venus      3.453e+11
Earth      3.458e+11
Mars       3.476e+11
Jupiter    3.437e+11
Saturn     3.506e+11
Uranus     3.458e+11
Neptune    3.474e+11
Pluto      3.511e+11