[Hunble]

Because light hasn't had a chance to traverse that billion years yet. If the universe is fourteen billion years across and 13 billion years old, the edge is unobservable

Light has been able to reach the Earth from 13 billion years ago, but it is impossible for light which is only 1 billion year away from us, to be totally invisible?

Even I am rather amazed by that statement. Is light (electro-magnetic energy) directional?

[hopespringseternal]

Light has been able to reach the Earth from 13 billion years ago, but it is impossible for light which is only 1 billion year away from us, to be totally invisible?

No, we can see light from a billion lightyears from us.