Early cinema depicted aliens as human-like for familiarity and practical reasons, but modern science fiction explores unrecognisable forms, challenging perception and our capacity to comprehend the truly alien.

When astrobiologists are asked what aliens might look like, many now point not to distant galaxies but to some of the strangest corners of Earth, where researchers on several continents are using extreme microbes,

Steven Spielberg and aliens is like cinematic peanut butter and jelly. His "Disclosure Day" is a thriller about a massive government alien cover-up.

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life.

But with the release of his new sci-fi film “Disclosure Day” (read my review here ), I thought it would be fun to offer a ranked list of just Spielberg’s sci-fi movies. I’m going to be liberal with my definition of sci-fi.