Obs. : 2018-07-02
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.017e+11
Venus      4.062e+11
Earth      3.870e+11
Mars       3.840e+11
Jupiter    3.939e+11
Saturn     3.861e+11
Uranus     3.883e+11
Neptune    3.825e+11
Pluto      3.845e+11