Obs. : 2020-06-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.290e+08
Venus      6.256e+08
Earth      6.323e+08
Mars       6.082e+08
Jupiter    6.200e+08
Saturn     6.171e+08
Uranus     6.141e+08
Neptune    6.082e+08
Pluto      6.200e+08