Obs. : 2018-06-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.789e+11
Venus      3.834e+11
Earth      3.866e+11
Mars       3.786e+11
Jupiter    3.899e+11
Saturn     3.807e+11
Uranus     3.808e+11
Neptune    3.751e+11
Pluto      3.797e+11