Obs. : 2015-09-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.130e+11
Venus      4.209e+11
Earth      4.310e+11
Mars       4.209e+11
Jupiter    4.162e+11
Saturn     4.186e+11
Uranus     4.274e+11
Neptune    4.302e+11
Pluto      4.284e+11