Obs. : 2019-01-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.501e+11
Venus      3.383e+11
Earth      3.474e+11
Mars       3.553e+11
Jupiter    3.404e+11
Saturn     3.452e+11
Uranus     3.555e+11
Neptune    3.571e+11
Pluto      3.501e+11