We've all been on long road trips, cramped into the backseat of a car for several hours as the twists and turns of the highway intensify already uncomfortable circumstances.
Now, imagine similar conditions on a 10-day trip, traveling 685,000 at over 20,000 miles per an hour. That's what lies ahead for the four astronauts on the Artemis II mission, onboard Orion.
Follow live coverage of the Artemis II mission, including a 24/7 live blog from pre-launch to splashdown, and major milestones on ABC News Live and streaming on Disney+ and Hulu.
The 10-day space mission slated to launch as early as Wednesday, April 1, will use NASA's newest spacecraft, Orion, for the historic lunar flyby.
The astronauts -- Reid Wiseman, Victor Glover, Christina Koch and Jeremy Hansen -- will spend more than a week flying around the moon, exploring depths of the cosmos that astronauts have not traversed in around five decades.
While the mission will not land humans on the moon, Artemis II is a crewed lunar flyby designed to demonstrate that the Space Launch System (SLS), the rocket that carries the astronauts into space, and the Orion crew capsule can meet the mission objectives, keep the crew safe in deep space and get them to the moon and back.
NASA will test life support, communications and navigation systems, as well as operating procedures, to prepare for later missions, including Artemis III, which is intended to land astronauts on the moon's surface.
According to NASA, the technology making up Orion is a "crucial step toward eventually sending crews on to Mars."
Read on for everything to know about life aboard the spacecraft.
The cabin of Orion is comprised of 330 habitable cubic feet, roughly the size of two minivans, according to NASA.
"Orion has nearly 60% more space than the Apollo command module’s 210 cubic feet," the space organization notes.
Despite the cramped conditions, the spacecraft is equipped with living essentials like an exercise machine, a toilet and more.
While the astronauts will be having an other-worldly experience, the Orion is built to allow them find some semblance of human life through daily routines of eating, drinking and sanitation.
According to NASA, astronauts have been working with food scientists to develop "a set menu based on their personal preferences and nutritional needs."
NASA also notes the crew will be able to hydrate and re-heat their food, as well as take regular meal breaks.
An Instagram video posted by NASA’s Johnson Space Center shows the Artemis II crew trying "space food" at the Houston center.
The astronauts are expected to exercise for 30 minutes every day in order to combat the diminishing effect of outer space on the body.
The spaceship is equipped with a dual-purpose flywheel machine for aerobic exercises, according to NASA.
The ship also allows for personal hygiene within its tight quarters -- it has a toilet (with private doors) and room for hygiene kits, NASA notes.
"Astronauts can’t shower in space but use liquid soap, water, and rinseless shampoo to remain clean," NASA's website explains.
The crew's sleeping arrangement involves attaching sleeping bags to the walls of the craft and resting for eight hours, according to NASA.
Communication with the crew onboard the Orion will include various forms of technology including a microphone and headset to chat with staff on earth, medical advisors and family, according to NASA.
"The crew will also have tablets and laptops they can use to review procedures and load entertainment onto before launch," NASA's website reads.
In a video explaining the mission, Romeo Garza, the deputy assistant manager for the Orion Communication and Tracking System, said the team will test two systems before committing to reaching the moon. First, the team will confirm success in communicating via the Deep Space Network, he noted.
"This is a ground network that provides a lot of capability for us to be able to talk back and forth as we go further and further away from the earth," Garza said.
Secondarily, he noted that the team will confirm their emergency communication system is functioning.
"The idea is that if the primary communication system fails, this emergency communication system will allow us to continue talking with the crew and navigate successfully without the primary system," Garza said.
