The four Artemis II crewmembers are emerging from the Orion capsule for the first time since beginning their mission 10 days ago.

A burst of applause and cheers could be heard in NASA's Mission Control Center as the first crew member came out.

The astronauts will get a chance to readjust to Earth's gravity on an inflatable raft known as the front porch before helicopters take them to the USS John P. Murtha.

President Donald Trump congratulated the Artemis II crew, calling it a "spectacular" trip, and said he looks forward to seeing them at the White House "soon," in a social media post following the successful splashdown.

A TV was wheeled into the roundtable dinner that the president was attending in Charlottesville, Virginia, and he watched the Artemis splashdown, according to a White House official.

The side hatch of the Orion capsule is now open, as four Navy personnel -- one for each astronaut -- enter the capsule to check on the crewmembers.

Recovery personnel, including Navy divers, have pulled up along the Orion capsule to help extract the crewmembers.

Following the path of Artemis II may be confusing as the astronauts, mission control and others use specific jargon and phrases.

Here are explanations of some of the terminology people may hear over the course of the mission:

Translunar injection burn

The translunar injection burn is the final step that sends the crew on the path to the moon, committing the Orion spacecraft to the remainder of its 10-day mission.

Lasting just minutes, it's a single-engine firing that propels the spacecraft out of Earth's orbit and on a "free-return trajectory."

Universal waste management system

The universal waste management system, otherwise known as a space toilet, is located inside a stall just like in a public restroom on Earth, according to NASA.

Space toilets use air flow to pull urine and feces away and into receptacles, which are stored for disposal. The astronauts have a handlebar to hold themselves down while using the toilet in the absence of gravity.

Read more here about the terms and jargon you may come across during the Artemis II mission.