Obs. : 2018-03-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.454e+11
Venus      3.461e+11
Earth      3.540e+11
Mars       3.469e+11
Jupiter    3.499e+11
Saturn     3.470e+11
Uranus     3.450e+11
Neptune    3.487e+11
Pluto      3.471e+11