Obs. : 2017-01-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    2.351e+11
Venus      2.251e+11
Earth      2.255e+11
Mars       2.251e+11
Jupiter    2.340e+11
Saturn     2.345e+11
Uranus     2.236e+11
Neptune    2.268e+11
Pluto      2.351e+11