Obs. : 2017-06-10
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.318e+11
Venus      3.383e+11
Earth      3.411e+11
Mars       3.383e+11
Jupiter    3.510e+11
Saturn     3.323e+11
Uranus     3.383e+11
Neptune    3.335e+11
Pluto      3.315e+11