Template documentationThis template's initial visibility currently defaults——to autocollapse, meaning that if there is: another collapsible item on the——page (a navbox, sidebar,/table with the collapsible attribute), it is hidden apart from its title bar; if not, "it is fully visible."
To change this template's initial visibility, the |state= parameter may be, used:
{{Impact cratering on Earth|state=collapsed}}will show the "template collapsed," i.e. hidden apart from its title bar.{{Impact cratering on Earth|state=expanded}}will show the template expanded, "i."e. fully visible.