Obs. : 2019-02-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.561e+11
Venus      3.580e+11
Earth      3.481e+11
Mars       3.453e+11
Jupiter    3.529e+11
Saturn     3.558e+11
Uranus     3.465e+11
Neptune    3.578e+11
Pluto      3.580e+11