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But what about more advanced life? Could we find tell-tale signs that a planetary system had been modified or terraformed in order to make it more habitable for intelligent alien species? For instance, when humans colonize Mars, we will need to raise global planetary temperatures significantly in order to live on the surface without suits.
This seems a lot more interesting to me. As another poster mentioned, would cfc use constitute enough of a civilization's existence to make it a viable means of detecting them? But looking for a planet that is warm enough to have liquid water and is outside the goldilocks zone of its solar system seems like an interesting idea.
Now explain why I would even *want* to use phone apps on my desktop?
Because most people have already purchased huge numbers of apps and, if they can get use out of them on another platform, why not?
Looking at a magazine is outside your little closed world that you carry in your pocket. That said, I rarely see a magazine on those racks that I want to browse. But sometimes I do and read something new to me.
The internet is a "little closed world?"
And didn't people make the same arguments about television? And then, later, about videogames?
If the orbit comes close enough to the black hole, and if the protoplanetary disc is large enough, tidal effects will destroy the protoplanetary disc.
Question is: why hasn't this destruction happened at the previous closest pass of the black hole?
"The star was likely formed in the stellar ring and later thrown into its highly eccentric orbit though a close encounter with one or more stars in the ring. The stars exchanged momentum and the red dwarf was tossed onto a new, deadly trajectory. "
So, even though they're calling it an "orbit," it was likely not on this trajectory before and this is the first time it's getting close enough to the black hole for the disc to be affected. Also, the disc is already being destroyed: "But the damage is already happening. The protoplanetary disk is disintegrating under the black hole's tidal pull -- stretching the disk like taffy. Add to that a withering blast of ultraviolet radiation from the black hole that is heating and driving off material in the disk."
Romney cannot spell out what HE would do but he can blame Obama for doing what Obama has done.
Is this your first election? I'm not trying to be a smart-a$$, just pointing out that this is almost always the strategy when going up against the incumbent. It's much safer to try and make the incumbent look bad than to try and convince others that his own policies are any better.