Obs. : 2018-03-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.575e+11
Venus      3.556e+11
Earth      3.443e+11
Mars       3.469e+11
Jupiter    3.458e+11
Saturn     3.469e+11
Uranus     3.556e+11
Neptune    3.575e+11
Pluto      3.479e+11