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The trailer shows NASA's plans to roll out the massive Artemis 1 rocket.

The volcano is seen from space.

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The first mission in NASA's Artemis moon program is set to roll out to the launch pad today.

NASA is about to launch its next human lunar missions as part of the Artemis program, more than 50 years after the first humans on the moon with Apollo 11. Artemis 1 will take a big step toward launch today when the mission's rocket and spacecraft roll out to the launch pad.

Ahead of the Artemis 1 launch, which is expected no sooner than May, NASA is rolling its Space Launch System megarocket and Orion spacecraft on the giant crawler-transporter 2 (CT-2) to Pad 39B at the agency's Kennedy Space Center.

You can watch the roll out live on Space.com at 5 p.m. The crawler makes its first move. NASA TV is where you can tune in. NASA Administrator Bill Nelson will commentary on the live coverage.

Live Updates: NASA's latest Artemis 1 moon mission in action

Related: NASA's Artemis 1 moon mission explained in photos

The crawler will begin its journey at the NASA Vehicle Assembly Building. The vehicle is over 6 million lbs. SLS and Orion will travel about 0.8 mph. The journey from the VAB to the launch pad will take approximately 11 hours, with a couple of stops along the way.

The crawler was designed to carry NASA's Saturn V rocket, which lofted the Apollo missions to the moon all those decades ago. The crawler is still in great shape thanks to recent upgrades, and seeing it in action is still exciting.

The associate administrator for exploration systems development at NASA headquarters in Washington D.C. told Space.com that it was the most amazing thing he had ever seen.

NASA's Artemis 1 moon megarocket, the first Space Launch System booster, will roll out to the launch pad for the first time at the Kennedy Space Center on March 17, 2022.

NASA's Artemis 1 moon megarocket, the first Space Launch System booster, will roll out to the launch pad for the first time at the Kennedy Space Center on March 17, 2022. (Image credit: NASA/Frank Michaux)

The Artemis 1 team members will work on the mission's wet dress rehearsal after the launch. During the event, team members will load the SLS with fuel and conduct a practice launch. The team will rehearse in the time immediately leading up to the launch.

The dress rehearsal is expected to take place on April 3. After this test, the mission team will conduct more tests on the pad before returning to the VAB to prepare for the official launch.

Artemis 1 is an uncrewed mission. It is an important step towards a future moon landing. This mission will test how well SLS and Orion can complete a mission to the moon and back, as Artemis 1 will see them launch on a journey lasting about 26 days that will take them 280,000 miles (450,000 km) from Earth, way out past the moon and then back to its home

This mission will make sure that SLS and Orion can safely take astronauts to space and back. Artemis 1 and Artemis 2 are expected to launch in the year of 2024, and will be crewed missions that will send a team of astronauts around the moon and back to Earth.

Artemis 3 is expected to land humans on the moon no later than 2025. This will be the first human lunar landing since 1972, when NASA&s final Apollo moon landing took place.

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