Obs. : 2019-08-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.475e+11
Venus      3.421e+11
Earth      3.477e+11
Mars       3.421e+11
Jupiter    3.442e+11
Saturn     3.460e+11
Uranus     3.543e+11
Neptune    3.477e+11
Pluto      3.460e+11