Complex sentence: The galaxy is suspected to be the second most distant object yet identified after UDFj-39546284, though UDFy-38135539 is still the most distant object spectroscopically confirmed.
Split into simpler sentences: The galaxy is suspected to be the second most distant object yet identified after UDFj-39546284. Though UDFy-38135539 is still the most distant object spectroscopically confirmed.