Obs. : 2018-01-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.850e+11
Venus      3.936e+11
Earth      3.870e+11
Mars       3.723e+11
Jupiter    3.723e+11
Saturn     3.936e+11
Uranus     3.905e+11
Neptune    3.992e+11
Pluto      4.017e+11