Obs. : 2020-02-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.133e+08
Venus      6.107e+08
Earth      6.196e+08
Mars       6.130e+08
Jupiter    6.137e+08
Saturn     6.155e+08
Uranus     6.045e+08
Neptune    6.107e+08
Pluto      6.155e+08