Obs. : 2018-04-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.657e+11
Venus      3.684e+11
Earth      3.618e+11
Mars       3.636e+11
Jupiter    3.618e+11
Saturn     3.636e+11
Uranus     3.690e+11
Neptune    3.647e+11
Pluto      3.636e+11