Is this because space is expanding? 68 km per second per megaparsec, see https://phys.org/news/2015-02-fast-universe.html https://phys.org/news/2015-02-fast-uni

Is this because space is expanding? 68 km per second per megaparsec, see https://phys.org/news/2015-02-fast-universe.html https://phys.org/news/2015-02-fast-universe.html, so the observable universe is more light years big than its age.