
Originally Posted by
toddpedlar

Originally Posted by
Poimen
Do any scientists debate the existence of black holes?
Not that I'm aware of... but they almost certainly don't act like sci fi movies portray them, since such movies were made clearly with no understanding of what's expected scientifically. Their existence is fairly certain based on very sound evidence concerning orbits of objects around them (e.g. at the center of the Milky Way).
The existence of black holes is practically proven; at least, the only explanation of the centripetal force in all the galaxies balancing the rotational movement of all the stars around the galaxy's centers is the existence of huge, gigantic monster black holes in their centers.
Has anyone, by the way, heard of white holes? They are way cooler; Dr. Humphreys has a good creationist theory about how a six-thousand year old earth is possible with a billions of years age for most of the rest of the universe (less for the Sun and planets, more for the stars that are further away). The idea is that, if the early universe had a center containing all mass, than you could form a white hole, which sort of is the reverse of a black one; a black hole gets heavier and nothing can escape it, a white hole basically gets smaller and smaller and nothing can enter it, with a huge difference in the clocks within and out of the boundary. If earth where at the center, and you calculate everything through, you get to a likely age of somewhere between a few thousand years (from history) and a couple of ten thousands at most for earth, with the existence of the white hole in the order of days or years (measured from its center). The theory solves many of the current problems in cosmology. Won't go into it in more detail here, though. It all follows from relativity, and I think it rocks! Okay, I'll stop this
digression and go on and try to answer your questions.

Originally Posted by
Poimen
Caveat: I am a young earth creationist so don't take anything that is described above as an expression of faith.
Good to hear! 

Originally Posted by
Poimen
1) How can people be so cavalier about the end of the world? Most of the scientists interviewed talked about it as if they stubbed their toe on the dresser, a minor inconvenience.
Because for them, it is! It won't happen in our lifetime anyways, and even if it does, we're rich enough to last for a while; especially in such cases as global warming, or nuclear wars.

Originally Posted by
Poimen
2) What are the possibilities of such an event occurring? Is this far fetched? I thought black holes did not move around the universe. How many real scientists put stock in these theories?
Black holes are unlikely to move around freely: they'd drag such a mass of stars with them and cause blots in star maps as to be either impossible to miss or easy to find, if close enough. Really, a black hole bends light and sucks it up, so if a lone one where close (with no circling stars (as the galaxies are)), whole portions of the universe would be blackened out from observation. They are not, so there are no black holes near. Simple as that.
The black holes that are on a crash course with us are in the galaxy of Andromeda, which is scheduled to crash into our galaxy in three billion years, though we know not for sure that that is going to happen. We can measure the radial velocity of Andromeda, but finding it's forward speed is hard; a satellite is scheduled to go find that out (among other things), called Gaia (2011, scheduled - will probably delay). Even if that happens, the chance of a star colliding or causing trouble in our solar system is minimal. If it happens, the two galaxies will most likely merge with no negative effects for the solar system. If the solar system will be ejected from the new galaxy/galaxies and form a lone star, that would also have no negative effects on our solar system. That, however, is three billion years from now, estimated, so I bet no one will even know what an American was, by then.
A little more distant, in about five billion years, our Sun will start getting through the amount of hydrogen it has to burn, and become a red giant which would expand to the size of the orbit of Mars. That would make earth uninhabitable in its current orbit; it might be pushed out of the orbit (in five billion years, I can project anything to be possible - if the human race will still be around) by technical means - one could drag it with smaller masses, such as astroids, or find other means. Or, we could have colonized other worlds, possibly terraformed Venus, Mars and most of the big moons around the gas giants. The gas giants are not heavy enough, I'm sorry to own, to start weight-driven hydrogen fusion by throwing them together, but it maybe we can start and control such things by then, or do without a star altogether (that would require tons and tons of energy though - on the up side, the hydrogen in the gas giants can deliver quite a bit through fusion).
As for asteroids and meteorites: we can deal with them. As an aerospace engineer in training I can assure you that current nuclear warheads combined with current launchers and current space capabilities are enough to end any of those threats. A proposed solution is to detonate a nuclear war head near the side of a big meteorite or asteroid. This would vaporize or ionize its side. Those vaporized/ionized particles would start flowing into space real hard (pressure effect), acting as a kind of a rocket engine and pushing the asteroid/meteorite sidewards so as to miss Earth. Unless things are seriously mishandled, this won't be a problem.
Global warming: think young-earth creationist. Where did all the fossil fuels come from? From living animals and plants pre-Flood. So if we burn all of that and release it into the air, CO2 levels will be back up to pre-Flood conditions. The earth certainly was inhabitable back then, so really, what is the problem? We Dutch will have to build higher dikes, maybe you Americans should start building them, but no big problems there. It will all be manageable.
Nuclear wars, now that is a nasty one. So far, MAD has worked, and I keep hoping it will work until we (in the aerospace community) have the tools to effectively kill all rockets, even large barrages of them. The Israelis are doing good work in that field, and Reagan's SDI gave a good impulse as well. It will take one, maybe two decennia, then the ICBM threat will be over. Bomber planes rarely get to target nowadays (even your B2's won't be safe from the new radars - Thales' newest radars, which work on different or even multiple wavelengths, can now detect 'stealthed' objects), and the chance a terrorist network can detonate enough of them to seriously endanger the world is so slim it can be laughed to scorn.
I believe I have adressed everything now, haven't I? If you ask me, it ain't gonna happen.

Originally Posted by
Poimen
3) What is Obama going to do about it?
Nothing? I mean, the US will take action in the case of a meteor/asteroid, and alternative energy will be sought for. The first is needed to protect Earth's existence, and the second one is politically good: get rid of those Arab dependencies, and the US gets a whole lot more independent. It also is good for the trade deficit you guys have run for the last decades, which is really hurting the world economy in the long run. America needs to get economically and financially sane and sound again, or the whole world will suffer. That is what will be your president's focus; he is a practical guy, not an idealist like Bush was.

Originally Posted by
Poimen
4) Our world seems to be far more fragile then we understand/believe. It seems that from the evidence one should be convinced that only God could not only create a world with (the possibility of) life but be able to sustain it. Many of the videos say that life on earth shouldn't have happened.
It is fragile, but not all that fragile. Really, the Lord built in plenty of safety valves, and as long as we can get the population not to exceed, say, thirty billion (theoretical max capacity is about fifty billion, but that is asking for the ideal, no-conflict world), we should be fine. Over time, we will be able to harvest the opportunities in the solar system, and then the opportunities become almost endless. Though that probably won't be in my lifetime, if you ask me.

Originally Posted by
Poimen
5) The greatest destructive force in the world is God, and hell is awaiting those who ignored the revelation they have been given, hardening themselves to the testimony of the universe. If people cannot be convinced by the vastness and greatness of space that there is a creator, no one but the creator himself can convince (change their heart).
Last edited by Rocketeer; 01-23-2009 at 03:14 AM.
Co
Netherlands Reformed Congegration of Kampen
Kampen, The Netherlands
Let the righteous smite me, it shall be a kindness, and let him reprove me, it shall be an excellent oil, which shall not break my head: for yet my prayer also shall be in their calamities. Psalm 141:5
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