Obs. : 2018-06-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.815e+11
Venus      3.822e+11
Earth      3.824e+11
Mars       3.696e+11
Jupiter    3.854e+11
Saturn     3.733e+11
Uranus     3.729e+11
Neptune    3.686e+11
Pluto      3.711e+11