Obs. : 2018-08-02
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.461e+11
Venus      3.646e+11
Earth      3.512e+11
Mars       3.512e+11
Jupiter    3.647e+11
Saturn     3.554e+11
Uranus     3.376e+11
Neptune    3.412e+11
Pluto      3.524e+11