Obs. : 2018-06-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.370e+11
Venus      3.392e+11
Earth      3.434e+11
Mars       3.316e+11
Jupiter    3.434e+11
Saturn     3.354e+11
Uranus     3.378e+11
Neptune    3.308e+11
Pluto      3.335e+11