Obs. : 2018-10-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.445e+11
Venus      3.453e+11
Earth      3.490e+11
Mars       3.484e+11
Jupiter    3.452e+11
Saturn     3.493e+11
Uranus     3.490e+11
Neptune    3.473e+11
Pluto      3.481e+11