Originally called Voyage dans la Lune, this film was made in 1902 and is considered to be the first actual film made - of course the definition of film is up to you as the first ever motion picture was back in 1878 - but this is a movie specifically shot to entertain an audience, it had a plot, characters and special effects.
The story consists of a group of astronomers (who seem to resemble wizards) who travel to the moon and then meet alien beings. Although compared to today's films it could seem quite boring this just shows how it all began, and to an audience in the early 20th century elements of this could be creepy and strange as it had never been done on this scale before. I think A Trip To the Moon just shows us how far we've come in the last century; just over 100 years of cinema and we have CGI, 3D, motion-capture, fantastic concepts that really did seem alien in 1902. This film has also inspired much pop culture media as well and the most well-known is probably the 2011 film Hugo which stars Ben Kingsley as Georges Méliés - the creator of A Trip To the Moon, that film in its own right is fantastic but it's nice to see the roots of cinema, and what it looked like. So if you've got about 12 minutes to spare then I recommend you watch this 1902 icon, you can find it on YouTube easily, then you can contemplate that you can watch footage that was shot over 100 years ago.