Obs. : 2018-04-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.967e+11
Venus      4.978e+11
Earth      4.886e+11
Mars       4.896e+11
Jupiter    4.896e+11
Saturn     4.938e+11
Uranus     4.999e+11
Neptune    4.925e+11
Pluto      4.896e+11