Of course this is my opinion after all, these are my top 4:

Star Trek the Original Series

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live long and prosper

Notice how I said 'the original series', truthfully, I'm not a fan of the star treks which came after this one. They lost its original flair.

"Space. The final frontier. These are the voyages of the Starship Enterprise. It's a 5 year mission to explore strange new worlds, to seek out new life and new civilizations. To boldly go where no man has ever gone before"

Stargate

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Exploring distant worlds not only with spaceships, also through a gate with enables you to jump through space

"Stargate SG-1 served up a mix of Egyptian, Norse and Old English myths, "explained" through their true interplanetary lens."

The Twilight zone

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it's a classic, which makes it x times better
"The mysterious anthology series sometimes dipped into horror, sometimes sci-fi, but it was always a gem of a short story, a perfectly sealed example of classic literature redefined to capitalize on mid-century American fears."

Doctor Who

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don't blink

Do not only watch the recent series ( 2005 onwards ) there's the 1960s one that should be watched too. Both are great.

"Doctor Who fans share a love for adventure and a vehicle known as a TARDIS, an anachronistic Police Call Box that is, as they say, bigger on the inside, than it is on the outside."

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Thank you for reading love x

Hope you enjoyed, if you want more of these of books, movies etc. let me know! (or if you want a part two