Extravehicular activity (EVA) is any activity done by an astronaut in outer space outside a spacecraft. In the absence of a breathable Earthlike atmosphere, the astronaut is completely reliant on a space suit for environmental support.

Jan 6, 2025 · NASA’s Extravehicular Activity and Human Surface Mobility Program provides safe, reliable, and effective spacewalking and surface mobility capabilities that allow astronauts to survive and work outside the confines of a spacecraft in order to explore on and around the Moon.

Feb 27, 2024 · This section establishes guidelines for Extravehicular Activity (EVA). EVA is any activity performed by a pressure-suited crewmember in unpressurized or space environments. EVA begins with depressurization of the airlock or space module, and ends with repressurization of the space module or airlock after crewmember ingress.

• Extravehicular Activity (EVA) – Definition: Crewmember leaves the protective environment of a pressurized spacecraft cabin and ventures out into vacuum of space wearing an extravehicular spacesuit. – Purpose • Contingency or Mission Success Repairs • Experiments or Testing • Spacecraft Servicing • Space Structure Construction

Feb 27, 2017 · In an effort to provide relevant and timely information to the Extravehicular Activity (EVA)/Space Suit community, we have created this repository to share pertinent reference materials supporting NASA’s Exploration efforts pertaining to EVA.

Mar 16, 2023 · Spacewalks, also known as extravehicular activities (EVAs), are an important aspect of space exploration. These activities serve many purposes including the maintenance of existing vehicles like the ISS, deployment of scientific …

Apr 10, 2007 · Provide connections to the vehicle (space shuttle, CEV, etc.) life support system to provide basic life support functions (breathing gas, suit pressure, cooling, CO2 removal, communications, biomedical sensor lines) while in a pressure suit (either EVA or IVA).

Extravehicular activity (EVA) is one of the most dangerous activities of human space exploration. To ensure astronaut safety and mission success, it is imperative to identify and mitigate the inherent risks and challenges associated with EVAs.

Jul 21, 2022 · The Extravehicular Activity and Human Surface Mobility Program (EHP), managed out of NASA’s Johnson Space Center, will play critical roles in landing the first woman and the first person of color on the surface of the Moon.

Aug 17, 2021 · Extravehicular activity (EVA), or spacewalking, is an integral aspect of human space exploration – it is the phase of the mission where astronauts have the opportunity to directly interact with a space or planetary environment, enabling unique opportunities for science, engineering, and exploration.