Today marks the 44th anniversary of the first American's "walk in space". This is an interesting turn of phrase considering they don't - walk in space. Try as I might, though, I can't think of something else short and snappy enough to describe it - "just popping outside into the vacuum of space to mend the robotic arm" doesn't really do it. "Walk in space" as a label is probably a fairly descriptive tag - once we know what it means. Could be interesting to ask a young person what they understood by "walk in space" - and whether the timbre of the answer would vary depending on whether they'd had an imaginary friend or not.