Obs. : 2020-06-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.388e+08
Venus      6.388e+08
Earth      6.452e+08
Mars       6.248e+08
Jupiter    6.316e+08
Saturn     6.316e+08
Uranus     6.354e+08
Neptune    6.211e+08
Pluto      6.316e+08