Obs. : 2017-01-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    2.676e+11
Venus      2.863e+11
Earth      2.862e+11
Mars       2.863e+11
Jupiter    2.697e+11
Saturn     2.661e+11
Uranus     2.874e+11
Neptune    2.838e+11
Pluto      2.711e+11