Obs. : 2018-01-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.449e+11
Venus      3.510e+11
Earth      3.432e+11
Mars       3.416e+11
Jupiter    3.416e+11
Saturn     3.434e+11
Uranus     3.404e+11
Neptune    3.470e+11
Pluto      3.488e+11