![The UFO shines on a male standing on the mountain; Shutterstock ID 1476587882; purchase_order: -; job: -; client: -; other: -](https://images.newscientist.com/wp-content/uploads/2023/11/22151233/SEI_181087182.jpg?width=300)
Space
Our hunt for alien life needs solid guidelines for clear-cut success
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