Obs. : 2010-04-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.770e+11
Venus      3.770e+11
Earth      3.737e+11
Mars       3.762e+11
Jupiter    3.599e+11
Saturn     3.737e+11
Uranus     3.619e+11
Neptune    3.491e+11
Pluto      3.460e+11