Definitions for extravehicular activity
ex·trave·hic·u·lar ac·tiv·i·ty

WiktionaryRate this definition:1.0 / 1 vote

1. extravehicular activitynoun

   any activity done by an astronaut outside of a spacecraft etc; a spacewalk or moonwalk

WikipediaRate this definition:0.0 / 0 votes

1. Extravehicular activity

   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. EVA includes spacewalks and lunar or planetary surface exploration (commonly known from 1969 to 1972 as moonwalks). In a stand-up EVA (SEVA), an astronaut stands through an open hatch but does not fully leave the spacecraft. EVA has been conducted by the Soviet Union/Russia, the United States, Canada, the European Space Agency and China. On March 18, 1965, Alexei Leonov became the first human to perform a spacewalk, exiting the Voskhod 2 capsule for 12 minutes and 9 seconds. On July 20, 1969, Neil Armstrong became the first human to perform a moonwalk, outside his lunar lander on Apollo 11 for 2 hours and 31 minutes. On the last three Moon missions, astronauts also performed deep-space EVAs on the return to Earth, to retrieve film canisters from the outside of the spacecraft. American Astronauts Pete Conrad, Joseph Kerwin, and Paul Weitz also used EVA in 1973 to repair launch damage to Skylab, the United States' first space station. EVAs may be either tethered (the astronaut is connected to the spacecraft; oxygen and electrical power can be supplied through an umbilical cable; no propulsion is needed to return to the spacecraft), or untethered. Untethered spacewalks were only performed on three missions in 1984 using the Manned Maneuvering Unit (MMU), and on a flight test in 1994 of the Simplified Aid For EVA Rescue (SAFER), a safety device worn on tethered U.S. EVAs.

U.S. National Library of MedicineRate this definition:1.5 / 2 votes

1. Extravehicular Activity

   Activities by crew members conducted outside the pressurized hull of a spacecraft.

How to pronounce extravehicular activity?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say extravehicular activity in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of extravehicular activity in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of extravehicular activity in Pythagorean Numerology is: 6

Examples of extravehicular activity in a Sentence

1. Lindsay Aitchison:

   We're not only meeting NASA's objectives, but also helping to support and encourage an emerging space economy so that in the future, it's not just NASA Extravehicular Activity services, but there'll be a range of customers that can purchase that in the future.

2. Buzz Aldrin:

   Aldrin in the Apollo 11 Lunar Module. For the 50th anniversary of the landing, Omega issued a limited edition Speedmaster watch, a tribute to the one that Buzz Aldrin wore to the moon. ( Neil Armstrong/NASA via AP) I prefaced desolate with magnificent, because of humanitys reaching outward and accomplishing something that people thought was impossible, Buzz Aldrin said. They dreamed of somehow reaching the moon. And to demonstrate, to be a part of demonstrating this miracle was magnificent. On July 16, 1969, Buzz Aldrin, along with mission commander Neil Armstrong and command module pilot Michael Collins, launched from Kennedy Space Center atop a Saturn V rocket. Four days later, Neil Armstrong made history when Neil Armstrong became the first person to walk on the Moon. Aldrinexited thelunar module 19 minutes after Neil Armstrong. The famed astronaut joked about being second during his interview. APOLLO 11 INSIDERS REMEMBER HISTORYS MOST FAMOUS SPACE MISSION : WE HAD A JOB TO DO AND WE DID IT I will forever, no matter what I do, be known as the second man on the moon, he quipped. In this July 20, 1969 photo made available by NASA, astronaut Buzz Aldrin, lunar module pilot, walks on the surface of the moon during the Apollo 11 extravehicular activity. ( Neil Armstrong/NASA via AP) Why does it bother you to be a second man to walk on the moon ? Youre one of a dozen men who had that incredible role, Cavuto asked in a follow-up question. Well, people love being vice president, dont they ? No, Buzz Aldrin responded with a chuckle. APOLLO 11S EPIC MISSION TO THE MOON IN PICTURES Does it bother me ? Yeah, it does a little bit, Buzz Aldrin continued. Why ? Because that isnt the way I would have described what this country did with two human beings landing on the moon and then deciding who was going to go out. We did things together as a team. The famous astronaut also recalls his famous steps across the surface of the moon and how he was well aware that the world was watching. Right near the end of our period out there Buzz Aldrin was doing something with the rock boxes -- I knew where the TV camera was, and I jumped up and down and pranced around to demonstrate the mobility that a person has, he said. So I was demonstrating for the people watching on TVintentionally showing them the varieties of kangaroo hop of turning. APOLLO 11 INSIDERS REMEMBER HISTORYS MOST FAMOUS SPACE MISSION : WE HAD A JOB TO DO AND WE DID IT During his sit-down with Cavuto, Buzz Aldrin also recollected the experience of looking back at Earth while on the surface of the Moon. [ You ] look up there, theres the earth. It looks small when its up there. If you look close, you may be able to see the ice over a pole, he said. If you look at your Omega watch, you may be able to tell what time it is in Houston. Buzz Aldrin also talked about the political significance of their mission to the moon, coming as it did duringthe space race with Russia atthe height of the Cold War. APOLLO 11 : THE BOOK THAT LANDED MAN ON THE MOON COULD SELL FOR $ 9 MILLION I do a lot of thinking today -- about somebody who had -- the guts to see that we were being outshone -- outshined in the Cold War by the Soviet Union, and to say, What can we do ?

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Extravehicular_Activity
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Extravehicular_Activity