With over 200 billion stars in our galaxy and at least 10 billion with planets kind of like Earth orbiting them, there's almost certainly alien life out there—so why haven't we found it yet?

If technologically advanced alien species existed, there should be evidence of them littered across our Universe. But, as this lovely video from New Scientist explains, we might just have been thinking about the whole alien thing wrong this whole time: we make assumptions about what alien life could or should look like, and that means we could be missing it as it hides in plain sight. Take a watch. [New Scientist]