Obs. : 2018-10-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.632e+11
Venus      3.684e+11
Earth      3.666e+11
Mars       3.686e+11
Jupiter    3.632e+11
Saturn     3.676e+11
Uranus     3.666e+11
Neptune    3.674e+11
Pluto      3.719e+11