Obs. : 2017-02-10
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.224e+11
Venus      3.433e+11
Earth      3.255e+11
Mars       3.403e+11
Jupiter    3.133e+11
Saturn     3.134e+11
Uranus     3.403e+11
Neptune    3.437e+11
Pluto      3.170e+11