Obs. : 2019-01-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.486e+11
Venus      3.388e+11
Earth      3.445e+11
Mars       3.570e+11
Jupiter    3.396e+11
Saturn     3.434e+11
Uranus     3.532e+11
Neptune    3.573e+11
Pluto      3.486e+11