Ambivalence wrote:
KnucklesUK wrote:
I sure do, I don't believe that we can be the only inteligent life form out in the entire universe, which consists of thousands of galaxies etc.
There's thousands of distinct galaxies in the Hubble Deep Field (basically Hubble pointed at a very, very small section of sky looking as hard as possible) alone.
The total number of galaxies in the observable universe is usually reckoned to be in the hundreds of billions. It's not possible to say for certain (and it depends what you count - there's a lot of dwarf galaxies around in addition to the biggies like Andromeda or the Milky Way) but it's certainly a very, very large number.
Though it doesn't really tell us anything, other than that if we are to be alone the probability of life arising must be very small - but it's plausible to suppose that life depends on something with a tiny probability, so we just don't know.
It's my belief (and fervent hope, because it's far more interesting than an empty universe) that there's plenty of life out there, because it's my belief that the probability of life arising isn't small - but at present it's only a belief. If we find evidence of life on Mars or Callisto (moon of Jupiter, it's possibly got liquid water oceans under the surface) or anywhere else in the Solar System, the odds of finding life throughout the universe change from "we don't know" to "pretty damn certain."
Speaking of Andromeda, I was looking for it an hour ago with my nocs. I have to wait until 5 in the morning when it's not too dark for binoculars, from then on, i have about 40 minutes before the stars start to disappear. I almost found it. Oh well, at least it's a waning crescent moon, maybe in a few days I can try again. I know exactly where Pegasus and Cassiopeia are, but the Andromeda Galaxy is always too faint.
Another great place to look for life is on Enceladus. And also, maybe there are lifeforms on Titan that have a totally different chemistry than ours, because people have been finding evidence of life on Titan I heard.