Obs. : 2018-01-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.019e+10
Venus      3.058e+10
Earth      2.948e+10
Mars       2.934e+10
Jupiter    2.934e+10
Saturn     3.058e+10
Uranus     2.962e+10
Neptune    3.009e+10
Pluto      3.074e+10