Obs. : 2018-07-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.496e+11
Venus      3.540e+11
Earth      3.451e+11
Mars       3.373e+11
Jupiter    3.595e+11
Saturn     3.409e+11
Uranus     3.339e+11
Neptune    3.314e+11
Pluto      3.393e+11