April 2 (UPI) -- The Artemis II astronauts have completed their perigee raise burn as part of a planned orbital adjustment and are headed back into a four-hour rest period, NASA said.
After an earlier rest period, the astronauts were awakened at 7:06 a.m. EDT for the perigee burn. NASA played the song "Sleepyhead" by Young and Sick to wake them up.
In the perigee burn, the spacecraft lit its main engine for 43 seconds, which raised the lowest point of its orbit. This helps prevent the craft from re-entering the Earth's atmosphere. It also refines the trajectory of the craft as it circles Earth. It put Orion into a stable high-Earth orbit, which aligns with its path to the moon.
The crew will now have another four-and-a-half-hour rest period, then they will be awakened to start their first full day in space.
Later today, the mission management team will have its first meeting of the mission to assess the spacecraft's systems and will give its approval for the upcoming translunar injection burn. That burn will send astronauts out of Earth's orbit and toward the Moon for the first time in 50 years. It will last just over six minutes and will speed the craft to escape Earth's gravitational pull.
