Obs. : 2017-05-26
Planet	Ly alpha (photons/cm^2/sec)
Mercury    2.988e+11
Venus      3.042e+11
Earth      2.946e+11
Mars       2.868e+11
Jupiter    2.891e+11
Saturn     2.966e+11
Uranus     3.003e+11
Neptune    3.016e+11
Pluto      3.001e+11