What? Two suns?!?!?!

Evidence mounts for sun's companion star

I knew there was something fishy about Sedna. Both it and Xena are threatening Pluto's planetary status because since their discovery, scientists have been questioning what makes a planet a planet? It turns out Xena (not its "official" name) is actually larger than Pluto.
Now scientists from the Binary Research Institute are thinking that Sedna's unusual elliptical orbit might be some kind of clue that we're actually part of a binary star system. That's when two suns are so close to each other they're bound by gravity.
Imagine if this idea had of come up hundreds of years ago. The Christian Church persecuted Galileo when he proposed that the earth revolves around the sun rather than our earth being the center of the universe. It's funny now to think what might have happened if someone, like Galileo, had suggested what would have sounded like such a preposterous idea - that our sun, and therefore our solar system, might be part of a binary star system. It sounds pretty far out now. That's only because we were raised to believe our sun was a solitary star.
It turns out more than half the stars in our galaxy have a stellar companion.
And it wasn't that long ago either that scientists wrote off possibilities of binary star systems being able to harbor earth-like planets in their orbits. Luckily, that thought process has changed in the scientific community. Although, not all binary star systems would make good candidates to have earth-like planets around one of their suns. Whether or not there might be habitable planets in a binary system depends on the distance between the two suns.
Now if it turns out our sun does indeed have a gravitational flirtation going on with another sun, that's all the more reason SETI scientists and planet hunters should try to search around good candidate binary stars... Even if it does mean we've got to change the way we view our solar(s) system.