Extravehicular Activity Outside Earth's Atmosphere

This page is the CodyCross answer for the clue below from Fantasy World , Group 878, Puzzle 3 (Hippogriff).

Question is: Extravehicular Activity Outside Earth's Atmosphere

and the answer is: SPACEWALK

Word Meaning:

SPACEWALK — Any activity by an astronaut outside of a spacecraft or space station in space.

Definitions from Wiktionary.