Obs. : 2018-08-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.141e+11
Venus      3.157e+11
Earth      3.128e+11
Mars       3.122e+11
Jupiter    3.147e+11
Saturn     3.146e+11
Uranus     3.294e+11
Neptune    3.136e+11
Pluto      3.145e+11