Obs. : 2018-11-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.481e+11
Venus      3.450e+11
Earth      3.503e+11
Mars       3.504e+11
Jupiter    3.481e+11
Saturn     3.495e+11
Uranus     3.494e+11
Neptune    3.504e+11
Pluto      3.508e+11