I am not sure which term to use for "corpse floating in zero gravity" or "space battle aftermath" in Japanese.
The closest tag I can find is gekitsui 撃墜.
Well, kinda feel suiting to “death and dying in space” theme.https://www.pixiv.net/en/artworks/76481772#manga
Dying from lack of air before becoming part of the debris after a space battle. Links for series of her demise art.