Obs. : 2018-06-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.657e+11
Venus      3.655e+11
Earth      3.720e+11
Mars       3.545e+11
Jupiter    3.737e+11
Saturn     3.572e+11
Uranus     3.693e+11
Neptune    3.667e+11
Pluto      3.561e+11