Obs. : 2018-10-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.451e+11
Venus      3.470e+11
Earth      3.502e+11
Mars       3.524e+11
Jupiter    3.489e+11
Saturn     3.510e+11
Uranus     3.502e+11
Neptune    3.524e+11
Pluto      3.539e+11