The discovery of a galaxy older than 13.8 billion years would challenge current cosmological models and our understanding of the universe's formation. Such a finding would necessitate a reevaluation of the Big Bang theory and the timeline of cosmic evolution. Researchers would likely publish their findings in a peer-reviewed journal, prompting further discussions in the scientific community. The implications could lead to new theories or modifications of existing ones in cosmology. Until such evidence is presented, the topic remains speculative.