NASA Artemis II Countdown: First Crewed Moon Flyby and Upcoming Mars Mission

ByShay Hobbs
Artemis II rocket with an orange and white body stands on a launch pad against a dramatic, cloudy evening sky, illuminated by bright floodlights.

Artemis II, an Orion spacecraft, is expected to take off on April 1, 2026, the first to carry a crew into space. It is expected to carry 4 astronauts around the moon and then back to Earth safely. The craft will be manned by NASA astronauts: Commander Reid Wiseman, Pilot Victor Glover, and Mission Specialist Christina Koch, and a Mission Specialist from the Canadian Space Agency (CSA), astronaut Jeremy Hansen.

Artemis II Preparations

Moonbound Episode II: For All Humanity, courtesy of NASA YouTube Channel

The official countdown for the test flight of NASA’s Artemis II began on March 30, 2026, at 4:44 p.m. Their planned launch time is set for 6:24 p.m. on Wednesday, April 1, 2026. Engineers will be tasked with powering up the hardware for flight, making sure communication links are working, and preparing the cryogenic systems. These systems will require exact specifications to ensure the required load of hundreds of thousands of gallons of hydrolox, or high-performance cryogenic propellants.

This launch is important because it will be the first crewed launch of NASA’s Space Launch System (SLS) rocket and Orion spacecraft. The teams must fill the Artemis II’s Ignition Overpressure and Sound Suppression System (IOP/SS) with water. The sound suppression system is loaded into a massive tank that will release a protective, overwhelming rush of water the moment the engines ignite. This step is one of several tasks happening simultaneously as the countdown clock runs, ensuring the rocket and Orion spacecraft are shielded from the extreme acoustic energy and pressure waves produced during liftoff.

The astronauts set to embark on the trip around the moon are in crew quarters, focusing on readiness, technical verification, and staying in quarantine to ensure they stay in top health. They have been undergoing strict health monitoring as well as a controlled sleep and nutrition plan to maintain energy and hydration for launch. They have been kept up to date with the rockets’ situation and weather conditions from their crew quarters.

Artemis II And The Future

Looking into what the future may hold, according to the NASA Administrator, Jared Isaacman has stated that there are changes regarding the agency’s Moon and Mars plans as of March 24, 2026. In his statement, he reiterated that NASA seeks to do what was considered impossible, returning to the Moon. This achievement is slated to happen during President Trump’s term. The goal of this return trip is to build a base on the Moon to establish a presence.

They had initially planned for the decommission of the International Space Station (ISS), originally set for 2030. This would leave the U.S. with no presence in low-Earth orbit, something NASA and Congress have discussed and agreed was not an acceptable outcome. It has served as a world-class orbital lab for over two decades. The press release acknowledges that the International Space Station can’t operate indefinitely, they are instead working on plans for private companies to come up with alternatives before decommissioning. 

With no promising prospects, it appears unlikely to happen before its expected retirement, and they will instead look for ways to extend its position by adding new modules that can be detached when the ISS is retired. These modules would be able to be removed and exist as a smaller space station on its own. 

Nuclear Power And Mars

NASA further explored its intentions for scientific missions in space with the proposed launch of Space Reactor-1 Freedom. It will be the first of its class, a nuclear-powered interplanetary spacecraft, headed for Mars before the end of 2028. When reaching Mars, it will release the Skyfall payload, a fleet of Ingenuity-class scout helicopters, to explore the Red Planet. The SR-1 Freedom is expected to establish nuclear power successfully operated in space, proving reliable for future missions. This strategic and collaborative effort by NASA and the U.S. Department of Energy will transition space nuclear technology from laboratory testing to reality, establishing a commercially produced supply chain for space missions.

As of the final day of March 2026, NASA has positioned itself for a historic return to deep-space leadership. Drawing near the launch of Artemis II, NASA will stream liftoff on April 1, 2026, on the NASA YouTube channel. May our astronauts arrive safely home.

When she isn't baking or writing, Shay is often found looking at useful tools for parents. Avid android enthusiast and part-time gamer, her passions lay with fact finding and unusual gadgets. Whether it is tech, games, history, the laws that bind us, cooking, or baking, Shay just can't pick one thing.