...anywhere in the universe? I am starting to think not. Here's my logic.

Most scientists agree that there are about 20 major conditions that exist with earth that allow it to support life as we know it today or even 100 million years ago. These include an almost ideal sun and our distance from it, an ideal location of the solar system within the galaxy, the axis tilt to produce seasons, polar caps, the core, oceans, tides, the moon, and a host of others. Take any of these 20 away, and life as we know it would end.

So, the odds of another planet possessing all of these vital ingredients could be estimated at about one in 10^20, which are indeed slim odds. Some scientists think that the odds are even slimmer. Even if there are 10^15 other possible planets in the universe (and I doubt that there are), the odds do not seem to favor another earth out there and life or other beings like us. Earth could very well be the only one.

WDYT?