Obs. : 2019-07-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.392e+11
Venus      3.392e+11
Earth      3.536e+11
Mars       3.424e+11
Jupiter    3.594e+11
Saturn     3.542e+11
Uranus     3.366e+11
Neptune    3.435e+11
Pluto      3.536e+11