At the distance they will be at closest approach, Ultima Thule will extend through as much of the sky as the full moon does to us on Earth. This is actually not

At the distance they will be at closest approach, Ultima Thule will extend through as much of the sky as the full moon does to us on Earth. This is actually not all that large, but anyone who has looked at the moon through a telescope can attest to the phenomenal detail that is possible, and New Horizons is equipped with some high calibre telescopic instruments.