Obs. : 2018-01-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.411e+11
Venus      3.436e+11
Earth      3.481e+11
Mars       3.464e+11
Jupiter    3.464e+11
Saturn     3.411e+11
Uranus     3.387e+11
Neptune    3.399e+11
Pluto      3.420e+11