Ha, I was going to post the same comment, mostly to make fun of my friend from Australia. ;-)
I'd like to see a followup to this article in the current time - that considers what we could detect on nearby star systems. What can we see at 5 ly, 10, 20, 100. I think someone must have already published some description of what we could see, but haven't come across it. Seems like I read they were looking for signs of air pollution, figuring they might follow our path? We seem to barely be able to see anything through the atmosphere from the planets that pass at just the right point between their sun and the earth.
I'd like to see a followup to this article in the current time - that considers what we could detect on nearby star systems. What can we see at 5 ly, 10, 20, 100. I think someone must have already published some description of what we could see, but haven't come across it. Seems like I read they were looking for signs of air pollution, figuring they might follow our path? We seem to barely be able to see anything through the atmosphere from the planets that pass at just the right point between their sun and the earth.