Obs. : 2018-05-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    2.498e+11
Venus      2.486e+11
Earth      2.475e+11
Mars       2.452e+11
Jupiter    2.479e+11
Saturn     2.463e+11
Uranus     2.479e+11
Neptune    2.450e+11
Pluto      2.452e+11