Obs. : 2016-04-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.119e+11
Venus      4.157e+11
Earth      4.095e+11
Mars       4.145e+11
Jupiter    3.872e+11
Saturn     4.145e+11
Uranus     4.150e+11
Neptune    4.123e+11
Pluto      4.186e+11