Obs. : 2018-04-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.831e+11
Venus      3.757e+11
Earth      3.673e+11
Mars       3.727e+11
Jupiter    3.673e+11
Saturn     3.727e+11
Uranus     3.878e+11
Neptune    3.791e+11
Pluto      3.727e+11