Obs. : 2018-12-31
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.471e+11
Venus      3.461e+11
Earth      3.546e+11
Mars       3.556e+11
Jupiter    3.471e+11
Saturn     3.582e+11
Uranus     3.502e+11
Neptune    3.576e+11
Pluto      3.582e+11