Obs. : 2017-06-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.039e+11
Venus      3.014e+11
Earth      3.024e+11
Mars       3.064e+11
Jupiter    3.093e+11
Saturn     3.011e+11
Uranus     3.014e+11
Neptune    2.994e+11
Pluto      3.008e+11