Obs. : 2018-04-26
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.563e+11
Venus      4.569e+11
Earth      4.418e+11
Mars       4.398e+11
Jupiter    4.418e+11
Saturn     4.398e+11
Uranus     4.613e+11
Neptune    4.493e+11
Pluto      4.398e+11