Obs. : 2018-03-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.468e+11
Venus      3.470e+11
Earth      3.510e+11
Mars       3.448e+11
Jupiter    3.467e+11
Saturn     3.445e+11
Uranus     3.449e+11
Neptune    3.479e+11
Pluto      3.445e+11