Obs. : 2018-01-10
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.183e+11
Venus      3.306e+11
Earth      3.315e+11
Mars       3.174e+11
Jupiter    3.174e+11
Saturn     3.183e+11
Uranus     3.303e+11
Neptune    3.339e+11
Pluto      3.236e+11