During a press conference on Friday, NASA leaders said the Artemis II crew is in "great spirits" and "really excited about the opportunity to be there and what's going on."

Orion's navigation and propulsion systems are performing so well that thew crew will not perform the planned trajectory burn scheduled for this evening, NASA said.

"I think it's really good to see that we don't need these minor correction burns. It shows that our navigation performance and our ability to get ranging has been outstanding," Howard Hu, program manager for the Orion spacecraft, said

On Friday, the astronauts spent some time conducting a "noise characterization" assessment of the toilet's noise levels.

The crew also had time to exercise and did a CPR demonstration. NASA said the astronauts are conducting a medical kit evaluation and will test emergency communications with the Deep Space Network.

-ABC News' Matthew Glasser

The Artemis II astronauts woke up around 1:00 p.m. ET on day 3 of their mission to the moon.

"Whenever you want to do some wake-up music, we can do some post-wake-up music," mission commander Reid Wiseman told Mission Control.

NASA's Mission Control in Houston played "In a Daydream" by the Freddy Jones Band.

Day 3 will include demonstrating CPR procedures in space and checking out some of Orion's medical kit, including the thermometer, blood pressure monitor, stethoscope and otoscope, according to NASA.

The crew will also begin to configure the cabin for its upcoming lunar flyby so it has the most ideal setup for capturing images and data of the far side of the moon.

Additionally, the Artemis II astronauts will be doing a Deep Space Network emergency communications test make sure the system works.

-ABC News' Matthew Glasser and Mary Kekatos

NASA released the first batch of high quality photos of Earth taken from the Orion capsule.

The images show the crew’s view as they look back at the pale blue dot we call home, while continuing their journey toward the moon.

According to NASA, the images were taken on Artemis II commander Reid Wiseman's "personal computing device, PC or tablet."

-ABC News' Briana Alvarado

During Friday morning's video feed from the Orion spacecraft, NASA captured an image of Earth partly in daytime and partly at night.

The Earth is the object on the right that appears crescent-shaped. Orion is about 77,000 miles from Earth here.

-ABC News' Matthew Glasser

Transportation Secretary Sean Duffy said the Artemis II moon mission is "critically important" a few hours ahead of the scheduled launch.

"This is a moment that brings the country together," Duffy told Gio Benitez on ABC News Live.

"The technology, the time, the effort that has gone into making today possible is so cool," he added.

Duffy said the U.S. is in a race against China to get to the moon's South Pole. Currently, Artemis III is planned for 2028, while China’s space program is gearing up for a moon landing by 2030.

"There was a time that the adage was, ‘He who controls the seas controls the world.' Now it is, 'He who will control space will control the world,'" Duffy said. “We have to win. This is critically important."