Obs. : 2018-01-12
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.446e+11
Venus      3.520e+11
Earth      3.552e+11
Mars       3.449e+11
Jupiter    3.449e+11
Saturn     3.446e+11
Uranus     3.542e+11
Neptune    3.558e+11
Pluto      3.484e+11