When does The Orville return?

The Orville is an American science fiction comedy drama television series. It was created by Seth MacFarlane, who also stars as the protagonist Ed Mercer, an officer in the Planetary Union's line of exploratory space vessels in the 25th century. The series premiered on September 10, 2017 and ran for two seasons on Fox and became available on streaming service Hulu the following day, followed by a third season exclusively on Hulu.
The Orville is set on the titular spacecraft USS Orville (ECV-197), a mid-level exploratory vessel in the Planetary Union. The show consists of adventures encountered by the ship's crew, usually involving planet exploration and visits to various parts of the galaxy.