Obs. : 2018-12-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.449e+11
Venus      3.403e+11
Earth      3.484e+11
Mars       3.555e+11
Jupiter    3.449e+11
Saturn     3.578e+11
Uranus     3.427e+11
Neptune    3.555e+11
Pluto      3.606e+11