Transit Method Reveals Many Extrasolar Planets
eldavojohn writes "You might recall not too long ago the first photo of an extra solar planet or, more recently, the mapping & speculation on these planets that lie outside our own solar system. Long since those first few spotted in the 90s, we're now starting to find them in droves due to the popularity of a method that relies on the planet passing directly between the viewer on earth and the star that it orbits. Be sure to check out Space.com's list of the most interesting extra-solar planets. Will we ever find Earth 2.0 candidates?"
Of course; space is big and there are bound to be tons of great planets out there. I just hope there is no one already living on our soon to be discovered new colony planet so we can move in quicker.
I Am My Own Worst Enemy
However, they do plan on looking for signs of molecular oxygen in the atmospheres of some of these planets. Molecular oxygen is chemically unstable, so its presence is usually considered to be an excellent indicator of life. Not perfect, as it might not be necessary or sufficient, but it's the best method we have right now for detecting M-class planets.
Ben Hocking
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It should be noted that out the Sun's axis of rotation (and that of the major planets) is NOT with the galactic plane. We can see them, but they can't see us...
In any case then, the next question is if the solar systems in our galaxy mainly orbit in the plane of the galaxies rotation. I'd assume so.
b er=633
They don't. See http://curious.astro.cornell.edu/question.php?num
Our own Solar system is not at all aligned with the galaxy. If it were, the milky way would appear more east-west in the night sky, especially during the equinox.