Obs. : 2018-01-08
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.982e+11
Venus      4.089e+11
Earth      4.120e+11
Mars       3.883e+11
Jupiter    3.872e+11
Saturn     3.982e+11
Uranus     4.135e+11
Neptune    4.226e+11
Pluto      4.174e+11