Obs. : 2018-04-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.516e+11
Venus      3.587e+11
Earth      3.481e+11
Mars       3.476e+11
Jupiter    3.481e+11
Saturn     3.476e+11
Uranus     3.595e+11
Neptune    3.507e+11
Pluto      3.476e+11