SpaceX is gearing up for the launch of a groundbreaking prototype of its Starship mega-rocket, which has the potential to support NASA’s lunar landing missions. The significant test flight is scheduled for Thursday.

This upcoming test marks Starship’s 12th flight and introduces the third-generation Starship, V3, which is larger, more powerful, and closer to complete reusability.

The rocket is scheduled to launch from a new pad at SpaceX’s Starbase in southern Texas, within a window opening at 6:30 p.m. ET. Currently, weather conditions are deemed 55% favorable for the flight.

SpaceX plans to broadcast this event live, starting around 5:45 p.m. ET.

Thursday’s flight will be closely monitored, as NASA intends to utilize Starship for its lunar missions. Under the Artemis program, both SpaceX and Jeff Bezos’ Blue Origin are developing lunar landers for NASA’s 2028 moon landing mission, with plans for tests with the Artemis III mission next year.

Furthermore, SpaceX CEO Elon Musk announced intentions to take the company public, potentially leading to the largest IPO in history. Post-IPO, Musk is projected to retain 85% of the company’s voting rights while continuing as CEO, chairman, and chief technology officer, which could make him a trillionaire.

The last test flight of Starship occurred seven months ago; in that time, both the Super Heavy booster and the upper stage, known as the ship, have undergone significant redesigns.

Standing at 408 feet tall when stacked, Starship V3 is taller than its predecessor. The redesign includes new engines for both the Super Heavy and the Ship, collectively generating approximately 18 million pounds of thrust.

Upgrades also include a reduction in booster grid fins, crucial for first-stage return, and an increase in Starship’s propellant tank capacity.

“Together, these enhancements aim to significantly elevate Starship’s capabilities, facilitating full and rapid reuse, propellant transfer in space, deployment of Starlink satellites, orbital data centers, and transport of personnel and cargo to the Moon and Mars,” stated SpaceX on its website.

During Thursday’s suborbital test, Starship will attempt to deploy 22 mock Starlink satellites and reignite one of the upper stage’s six Raptor engines—essential for the deorbit burn upon its eventual return to Earth.

This test flight will last about 65 minutes, with the upper stage expected to splash down in the Indian Ocean at mission’s end. SpaceX is focused on making the ship reusable, employing a mechanical arm to “catch” the spacecraft on a launch tower at the South Texas facility.

SpaceX previously demonstrated a catch maneuver with the Starship’s Super Heavy booster; this time, the booster is set to land offshore in the Gulf of Mexico rather than returning to the Texas launch site. According to SpaceX.

Facing a challenging development timeline, Starship made its debut flight in 2023 but experienced multiple failures last year, including an uncontrolled atmospheric re-entry and two mid-flight explosions. SpaceX aims to have Starship ready for the Artemis III mission next year, coordinating with NASA’s Orion capsule for lunar orbit entry.

If successful, SpaceX aims to position NASA’s Starship for potential astronaut missions to the moon by 2028.