Obs. : 2018-01-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.756e+11
Venus      3.795e+11
Earth      3.773e+11
Mars       3.742e+11
Jupiter    3.742e+11
Saturn     3.756e+11
Uranus     3.698e+11
Neptune    3.763e+11
Pluto      3.778e+11