Hmm, déja vu.
I was watching a television show the other night about astronomy. For every grain of sand on every beach on earth, there are a million stars just like our own sun. As far as I know, planets around other stars are fairly common. Scientists now believe there's simple life on mars, the current consensus being that if life can live, it will arise. That makes me believe that life is rather abundant.
Given the number of other suns in the universe, it seems likely that there would be many like our own; the similarities might even extend to a moon like ours. If they have a moon like ours, chances are that life on their planet will have evolved more speedily since the tides (which are caused by our moon) result in life being required to adapt to live on land rather than just in the sea.
|