Obs. : 2015-04-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    5.146e+11
Venus      5.391e+11
Earth      4.870e+11
Mars       5.323e+11
Jupiter    4.936e+11
Saturn     4.793e+11
Uranus     5.199e+11
Neptune    4.844e+11
Pluto      4.689e+11