Obs. : 2017-04-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.649e+11
Venus      3.771e+11
Earth      3.711e+11
Mars       3.539e+11
Jupiter    3.631e+11
Saturn     3.827e+11
Uranus     3.743e+11
Neptune    3.771e+11
Pluto      3.835e+11