Obs. : 2018-08-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.102e+11
Venus      4.373e+11
Earth      4.244e+11
Mars       4.244e+11
Jupiter    4.377e+11
Saturn     4.289e+11
Uranus     4.102e+11
Neptune    4.151e+11
Pluto      4.247e+11