'Welcome home, Artemis': Crew celebrates historic 10-day moon mission

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.

NASA astronaut Christina Koch is making history as the first woman to travel around the moon.

Koch, 47, is among the four-person crew aboard the Orion spacecraft for NASA's Artemis II mission, which lifted off Wednesday evening from the Kennedy Space Center in Florida for a 10-day journey.

Koch, who was born in Grand Rapids, Michigan, and grew up in Jacksonville, North Carolina, is no stranger to record-setting NASA missions.

Koch was first selected as a NASA astronaut in 2013. In December 2019, she set the record for the longest single spaceflight by a woman, spending 328 consecutive days in space, according to NASA, and was part of the first all-female spacewalk in October 2019 with Jessica Meir.

Read more about Koch here.

-ABC News' Kelly McCarthy

After a successful launch from the Kennedy Space Center in Florida on Wednesday evening, the Artemis II crew of four is headed to the moon on a 10-day journey.

How does a nearly 6 million-pound rocket and crew module make that journey possible? It’s all about physics.

Read more here to learn about the stages from liftoff to Earth orbit to the trans-lunar injection burn and, finally, the journey home.

-ABC News' Briana Alvarado

The Artemis II mission management team has polled "go" for the crucial trans-lunar injection burn, which will send the crew on its path to the moon.

The burn will take place at 7:49 p.m. ET.

-ABC News' Matthew Glasser