Obs. : 2018-08-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.144e+11
Venus      4.202e+11
Earth      4.172e+11
Mars       4.194e+11
Jupiter    4.181e+11
Saturn     4.194e+11
Uranus     4.392e+11
Neptune    4.189e+11
Pluto      4.211e+11