"We did about five scripts, and finally Steve and I compromised," Lucas recalled.

The moment of first contact with extraterrestrials is a staple of science fiction. It usually involves a frantic scientist having a Eureka moment, realising in a single dramatic instant that Earth is being visited by creatures from light-years away.

Steven Spielberg’s fourth film about alien encounters is “Disclosure Day,” following “ET: The Extra-Terrestrial,” “War of the Worlds,” and “Close Encounters of the Third Kind.” That inspired us to take another look at what Roger Ebert thought about some of the most famous and infamous alien movies,

She even returned seven years later for the equally celebrated sequel, Aliens — it’s not that surprising that Aliens holds up so well, especially since it was directed by sci-fi savant James Cameron.