All eyes are on Florida's Space Coast to see history in the making Saturday as NASA attempts to launch a mega moon rocket on a mission that will orbit the moon and return back to Earth.

The 2-hour launch window for the second attempt of the Space System Rocket and Orion Spacecraft is expected to open at 2:17 p.m. ET.

It will be the first test flight of NASA’s Space Launch System (SLS) rocket and the Orion spacecraft and humans will not be aboard. The "passengers" named "Campos," "Helga" and "Zohar" – which are manikins – will be outfitted with sensors to collect crucial information on pressures and radiation levels to improve safety for future spaceflight.

NASA says the manikin named Campos that will ride in Orion’s commander’s seat will also wear a specialized survival suit, similar to what astronauts on future Artemis missions could wear. The other two phantoms will fly with the names "Zohar" and "Helga" and will be devoted to monitoring radiation levels throughout the mission.

When NASA’s Artemis I mission reaches space, there won’t be any astronauts aboard but a familiar face will be floating around the Orion capsule. Snoopy, the famous comic strip beagle, is serving as a "zero-gravity indicator" for the flight.

NASA said the Artemis 1 mission will demonstrate the performance of both Orion and the SLS rocket and test our capabilities to orbit the moon and return to Earth safely. The flight will pave the way for future missions to the lunar vicinity and beyond. 

After a thorough review, the agency says if they can minimize the impacts to future astronauts, Artemis II could take humans back to space and the moon by 2025.

The mission is to complete a lunar orbit, traveling a distance of about 280,000 miles from Earth around the moon. After launching from Kennedy Space Center, the SLS will send the Orion spacecraft on a trajectory to orbit the moon.

"Once they launch that vehicle and unleash the 8.8 million pounds of thrust. We'll start our journey," explained Judd Frieling, Artemis 1 ascent & entry flight director. After the SLS clears the KSC launch tower, the rocket will roll in a direction to bring Orion to a "heads down position," according to Frieling.