We are limited to seeing objects that create (or reflect) light in the night sky, and since light must travel a distance before reaching our eyes on Earth, we are unable to see beyond the cosmic horizon.
Any radiation coming from there can aid our vision. However, at this time, we can detect objects that are outside the Hubble sphere. The Hubble sphere's expansion in tandem with the universe's expansion is the primary idea behind this.
The Universe is not old enough for an object's light to have traveled to us if it is located beyond the particle horizon. The particle horizon would have been zero at the precise moment of the Big Bang.
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