The phrase "alien origin" is correct and usable in written English.
It can be used to describe something that comes from a source that is foreign or not of this world, often in contexts related to science fiction or discussions about extraterrestrial life.
Example: "The researchers discovered a substance with properties suggesting it had an alien origin, raising questions about its potential uses."
Alternatives: "extraterrestrial origin" or "foreign origin".
The deputy prime minister, Dmitry Rogozin, Russia's former ambassador to Nato, called for an international initiative to create a warning system for "objects of an alien origin".
The Church of Scotland and Scottish Unionist MPs complained that Irish Catholic immigrants were a "completely separate race of alien origin", demanded a halt to immigration and even advocated repatriation.
The citizens of the DC universe know of Superman's alien origin since the first issue of Action Comics published in 1938, but with his base of operation primarily being the American city of Metropolis, it has been easy for Americans to think of the hero as one of their own.
An international group of astronomers has detected an interesting radio signal spike, one that could possibly be of alien origin, from a star system located 95 light-years away.
'Some people think crystal skulls are of alien origin,' he continues, pointing to a photograph taken through the Skull of Doom, which appears to show a shadow of a 1950s-style flying saucer through the middle of it.
Mulder believes the craft to be of alien origin, recovered by the Talapus.
The whole of Greek mythology having alien origins?
Emitting bleep-bloop noises from a waggling antenna, it reveals to Dicky its alien origins and magical powers.
It follows the title character, a k a Mark Grayson, the son of Omni-Man, a superhuman with alien origins, as he copes with his legacy, college and more.
I'm not sure how many people would put the "Witch Mountain" movies at the top of their list, but those people are about to be either very happy or very miserable, as Disney has remade the 1975 science fiction/fantasy film about a pair of siblings with telekinetic powers and, as it turns out, alien origins.
But scientists didn't believe that was enough to create today's oceans, and thus they looked to alien origins for our water supply.
