Obs. : 2018-12-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.392e+11
Venus      3.374e+11
Earth      3.436e+11
Mars       3.470e+11
Jupiter    3.434e+11
Saturn     3.499e+11
Uranus     3.383e+11
Neptune    3.470e+11
Pluto      3.499e+11