Obs. : 2015-09-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.196e+11
Venus      4.255e+11
Earth      4.458e+11
Mars       4.255e+11
Jupiter    4.214e+11
Saturn     4.356e+11
Uranus     4.458e+11
Neptune    4.553e+11
Pluto      4.501e+11