Obs. : 2017-01-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    2.466e+11
Venus      2.392e+11
Earth      2.409e+11
Mars       2.392e+11
Jupiter    2.499e+11
Saturn     2.473e+11
Uranus     2.376e+11
Neptune    2.400e+11
Pluto      2.466e+11