UPSC Notes

Spacewalks (Extravehicular Activity - EVA)

PYQs

8

Articles

1

Momentum

21

Phase IFoundation

Background

Overview

Spacewalks highlight the engineering challenges and human capabilities required for long-duration space missions and the development of space infrastructure. They demonstrate the practical application of space technology for maintaining and expanding human presence in space, relevant for understanding the operational aspects of space exploration.

Extravehicular Activity (EVA), commonly known as a spacewalk, refers to any activity done by an astronaut or cosmonaut outside a spacecraft beyond the Earth's appreciable atmosphere. EVAs are crucial for the assembly, maintenance, repair, and upgrade of space stations and other orbital infrastructure.

Phase IIStatic core

Facts & tables

Key facts

Definition

Activity performed by an astronaut outside a spacecraft in orbit

Purpose

Essential for maintenance, repair, assembly, and upgrades of orbital structures

Requirements

Specialized spacesuits for life support, protection, and mobility

Complexity

Involves complex procedures, extensive training, and significant risks

Reference table

Static syllabus anchors

TypeReference
Conceptual areaSpace Science & Exploration

Reference table

Institutions & roles

BodyRole
NASAConducts and trains for
Phase IIIExam lens

Prelims angle

Overview

Prelims angle: Multi-statement analysis

Prelims angle: Factual recall

Quick revision

  • Astronaut activity outside spacecraft.
  • Crucial for space station maintenance/assembly.
  • Requires specialized spacesuits for survival.
  • Involves high risk and complex procedures.
  • Essential for orbital infrastructure development.

High-confidence PYQs

Topic timeline

Space Science & Exploration

NASA astronauts Anil Menon, Jessica Meir undertake spacewalk to upgrade space station

07 Aug 2026 · Spacewalks (EVAs) are critical activities performed by astronauts outside spacecraft for maintenance, repair, and assembly of orbital structures like the ISS, demanding specialized equipment and high precision.

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Spacewalks (Extravehicular Activity - EVA)

Practice writing on this topic

UPSC has asked 8 linked questions on Spacewalks (Extravehicular Activity - EVA) in Mains. Write an answer to one — and get it evaluated.

UPSC Prelims PYQs on Spacewalks (Extravehicular Activity - EVA)

Practice official previous year questions asked by UPSC related to this concept.

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