Obs. : 2017-05-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.692e+11
Venus      3.672e+11
Earth      3.803e+11
Mars       3.644e+11
Jupiter    3.621e+11
Saturn     3.835e+11
Uranus     3.686e+11
Neptune    3.793e+11
Pluto      3.883e+11