Obs. : 2018-07-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.041e+11
Venus      4.110e+11
Earth      3.948e+11
Mars       3.948e+11
Jupiter    4.069e+11
Saturn     4.000e+11
Uranus     3.829e+11
Neptune    3.825e+11
Pluto      3.969e+11