Artists, science fiction writers, and others have offered varying speculations about what life might be like on other planets. In the earliest days this focus was on Martians and “men on the moon.” The grays are the iteration we’re most familiar with, you know the stereotypical gray-skinned alien with the elongated head and black, soulless eyes.
Ridley Scott, George Lucas, Stephen Spielberg, and so many others have offered their own, unique visions.In real life, a few experts believe we’ll discover alien life forms within the next couple of decades, including astronomy researcher Chris Impey and senior SETI astronomer Seth Shostak. Others, like Neil deGrasse Tyson, say we may find something like bacteria, under the frozen seas of gas giant moons like Titan, Enceladus, or Europa. But it’s unlikely we’ll be shaking hands with E.T. Or tentacles. Or whatever they have.
The issue for Tyson is that space is astronomically large. Despite advanced technology, we just might be too far away from one another. Time might also be a factor. The advanced alien civilization we’re looking for may either have lived too long ago or aren’t around yet. In the latter scenario, we’re one of the first intelligent life forms to inhabit the universe.
Whether we’ll find sophisticated aliens soon or not, many scientists believe they’re out there. There are just too many Earth-like planets. The Milky Way alone is replete with hundreds of thousands of planets in the inhabitable zone, or more. So if they’re out there, or once were, what might they look like?
Oxford University researchers just wrapped up a study to answer this very question. Their findings were published in the International Journal of Astrobiology. Astrobiology is the study of life elsewhere in the cosmos.
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