Scientists have gained evidence that revives an older theory of speciation, wherein necessary genes migrate a different chromosome in one of the species.
54 known planetary systems may have earthlike worlds a new computer model finds, the first of its kind to run for a timeframe simulating 20 million years. It predicts that star systems with "hot jupiters", previously thought to sweep up the rocky material needed to form planets, may actually form earthlike planets in a habitable zone. The model predicts that these planets would be true water-worlds, containing far more water than earth... but since it was only run for 20 million years, and our own planet is in excess of 4 billion and at one time we were covered in water too, I kind of have to wonder if they might not be even more earthlike than the model would lead us to predict. Perhaps complete with life?
And Life on Earth has not yet finished surprising us. For the first time, a complex eukaryote species has been found in an environment where there is no oxygen. Their solution: breathing nitrogen. This is also the first time a complex species has been found to play a role in denitrification. So if we're learning that life on earth can exist where we believed it could not... who's to say what we'll find out there among the stars?
And if you're a real geek, you may want to watch live video of scientific events online, using the new service of http://www.sciencelive.org/ It looks like there is going to be quite a selection.
54 known planetary systems may have earthlike worlds a new computer model finds, the first of its kind to run for a timeframe simulating 20 million years. It predicts that star systems with "hot jupiters", previously thought to sweep up the rocky material needed to form planets, may actually form earthlike planets in a habitable zone. The model predicts that these planets would be true water-worlds, containing far more water than earth... but since it was only run for 20 million years, and our own planet is in excess of 4 billion and at one time we were covered in water too, I kind of have to wonder if they might not be even more earthlike than the model would lead us to predict. Perhaps complete with life?
And Life on Earth has not yet finished surprising us. For the first time, a complex eukaryote species has been found in an environment where there is no oxygen. Their solution: breathing nitrogen. This is also the first time a complex species has been found to play a role in denitrification. So if we're learning that life on earth can exist where we believed it could not... who's to say what we'll find out there among the stars?
And if you're a real geek, you may want to watch live video of scientific events online, using the new service of http://www.sciencelive.org/ It looks like there is going to be quite a selection.