This is a timeline of science fiction as a literary tradition.
While the date of the start of science fiction is debated, this list includes a range of ancient, medieval, and Renaissance-era precursors and proto-science fiction as well, as long as these examples include typical science fiction themes and topoi such as travel to outer space and encounter with alien life-forms.
Some 15th century writers imitated the 14th century author Geoffrey Chaucer (1340 -1400), such as John Lydgate and Thomas Hoccleve.
Notable poets include Stephen Hawes, Alexander Barclay, William Dunbar, Robert Henryson, and Gawin Douglas.
John Skelton wrote ironic and satirical works which blended Medieval and Renaissance styles.