| Personal background |
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| A Frenchman living in Japan, well, living abroad most of my life. Great lover of the Indian culture, ocean sailing, software development, linguistics and knowledge management. Also, bad cook, horrible keigo, weak math and the attention span of a gnat (well, maybe a cloud of gnats). |
| Thoughts about SETI and SETI@home |
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Sure, I think there is life in the universe. There are aminoacids on most comets. That does not mean we have company, unless you want to try and speak to bacteria or fungus.
Seems like if we find life, it will be within the galaxy. Light has too far to travel otherwise (and we would end up with fossil signals anyway). Let's talk about that:
I think that if there is a "lifecycle of life" in the galaxy, we are most likely to find it towards the center, because:
- Life should be statistically evenly spread over the galaxy (relative to local star density). Why? Because we are in no special location, yet there is life here. Sooo, we should calculate the highest star density/depth from our vantage point and start there in outwards concentric circles.
- We want to find intelligent life. Intelligent life is probably curious. The night sky close to the galaxy center must be incredible! On a planet with a rich night sky, a species is more likely to "reach to the stars". I mean, look at us. We have a boring naked-eye night sky and most people don't give a damn about it.
- Life loves light and hates the void. light and "stuff" density increase towards the center of the galaxy. Hence a space-travelling species would likely start going to the center and only then, outwards again. Buuut, too much light is too hot, and too much void is too cold. So, there should be a sphere in the sky, around the core, not too close, not too far, that has the most "temperate" living environment, and where space-faring life should be concentrated. If there is any. Now for carbon-based life, we could probably calculate that "temperateness" fairly easily.
Could we communicate with intelligent aliens? Sure! Language is the art of interacting with one's physical environment. Showing them ours (physics) and studying theirs is the only thing you'll need. Questions will start, and both will answer with math. A long first step. Then we should communicate our appreciation of these answers. "Elegant answer", "terrible heat" and stuff lik |
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