This is an essay on notability. It contains the advice and/or opinions of one or more WikiProjects on how notability may be interpreted within their area of interest.
This page in a nutshell: In most cases the launches of spacecraft and the rockets used to launch them should be covered in the articles on the spacecraft, rather than by creating new articles for the launches themselves
This is a WikiProject guideline for determining whether individual launches of rockets meet Wikipedia's notability criteria. It only covers the launches of spacecraft, not the spacecraft themselves or their missions. In most cases it is more appropriate to cover the launches of spacecraft in the articles about those spacecraft, rather than creating separate articles