Obs. : 2016-12-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.485e+11
Venus      3.479e+11
Earth      3.360e+11
Mars       3.449e+11
Jupiter    3.441e+11
Saturn     3.481e+11
Uranus     3.401e+11
Neptune    3.438e+11
Pluto      3.485e+11