Human contact with aliens in fiction is by necessity science fiction.
The genre is defined by speculative science or technology, the very existence of alien life is at this stage speculative science and the ability to travel between planets(either by us or the aliens) is currently speculative technology.
Because it is not based on truth.
Alien (1979) and Alien (2003) are both rated R for sci-fi violence/gore and language.
"Invasion of the Saucer Men" (1957). Also known as "Invasion of the Hell Creatures"
We just watched Prometheus which was rated R for sci-fi violence. We wondered what exactly the term meant as well, but think it perhaps has to do with the creatures or blood involved. Perhaps the violence not resulting in red blood is considered "sci-fi". Maybe it's that the violence is between aliens and humans (as opposed to human vs human). I'd love a better answer, but that's what we came up with.
no
One can find the Sci-Fi channel schedule on various websites like SyFy and InnedMind. Both websites offer a schedule for the Sci-Fi channel which can be views on TV.
Aliens i would say
Sci Fi Science Physics of the Impossible - 2009 Aliens Attack was released on: USA: 3 April 2011
Yes , aliens are often prominently featured in science fiction ; for example "The Silke" by A.E van Vogt .
reality
Hi-Fi Sci-Fi was created in 1993.
Aliens Illegal - 2013 was released on: USA: 28 June 2013 (Roswell International Sci-Fi Film Festival)
The film combines elements of both Westerns and Science Fiction films .
Alien (1979) and Alien (2003) are both rated R for sci-fi violence/gore and language.
Sci Fi Inside Sci Fi Friday - 2005 TV was released on: USA: 11 July 2005
"Invasion of the Saucer Men" (1957). Also known as "Invasion of the Hell Creatures"
A moon supposedly circulating a sci-fi planet.
Sci-Fi-London was created in 2002.