Obs. : 2017-05-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    2.112e+11
Venus      2.093e+11
Earth      1.971e+11
Mars       1.979e+11
Jupiter    1.981e+11
Saturn     1.988e+11
Uranus     2.093e+11
Neptune    2.055e+11
Pluto      2.007e+11