01:1601:16, 18 May 2024diffhist−34
Exploration of Mars
Split "Past and current missions" into "Past missions" and "Current missions." "Past missions" is probably still too long, and "Current missions" likely needs cleanup
17:1817:18, 12 May 2024diffhist+1,375
First contact (science fiction)
Made rewrites in "Ethics of first contact" subsection (especially the first paragraph) and reformatted references to be in line with the rest of the article