Obs. : 2018-06-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.560e+11
Venus      3.594e+11
Earth      3.621e+11
Mars       3.586e+11
Jupiter    3.651e+11
Saturn     3.599e+11
Uranus     3.563e+11
Neptune    3.578e+11
Pluto      3.589e+11