Obs. : 2018-12-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.057e+11
Venus      3.021e+11
Earth      3.108e+11
Mars       3.197e+11
Jupiter    3.057e+11
Saturn     3.209e+11
Uranus     3.117e+11
Neptune    3.223e+11
Pluto      3.234e+11