Oh, who am I kidding? We can’t stop talking about the paranormal now, not with the looming specter of evil alien invasion hanging over our heads. Just when I thought I was out…
Here’s the story: Scientists like Stephen Hawking have long cautioned against the pursuit of alien civilizations and shooting signals out into space – like what they do over at SETI and METI. His reasoning is that, frankly, we don’t quite know what we’re asking for when we do that.
If aliens are out there, are they peaceful? Do they want to be found? Or are they just looking for the chance to plunder and destroy a little planet like Earth?
It’s that last scenario that some scientists are worried about.
Enter David Kipping and Alex Teachey of Columbia University in New York, who according to Discovery News are working on an idea that might help us if we ever choose to hide from those prying alien eyes.
They believe it’s possible that alien scientists may use the same methods we do to locate habitable planets – analyzing those dips in light we see in telescopes when a planet crosses its star (a method called transit photometry).
To hide Earth, the two scientists suggest, we could use giant lasers to prevent this dip from being seen.
Now here’s another question: Is it not possible that advanced alien civilizations have had this very same idea, as well, and that’s why we haven’t found them, yet?