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richter915
05/26/05, 10:18 AM
Extraterrestrial: Imagining Other Worlds Edna DeVore
Director of Education and Public Outreach
SPACE.com
2 hours, 56 minutes ago



ET is coming to your living room in "Extraterrestrial," and no one is being abducted. Over the past several months, a top-notch group of American and British scientists teamed up with Blue Wave Productions, Ltd. (for the National Geographic) to imagine what ET is like on other worlds. It's all based upon our scientific understanding of life, stars and planetary systems. When filmed, Dr. Michael Meyer was NASA's astrobiology program scientist, and now serves as NASA Headquarters Mars Program Scientist; Dr. Seth Shostak is a senior astronomer here at the SETI Institute; Dr. Chris McKay is a leading Mars researcher at NASA Ames Research Center, Dr. Laurance Doyle conducts research on animal communication, and planetary systems around binary stars at SETI Institute and is the lead scientists at PlanetQuest, Inc. a new non-profit that will engage the public in finding extrasolar planets. Dr. Simon Conway Morris is a world-leader in evolutionary biology at Cambridge University in England...and the list goes on. These are serious and accomplished scientists--legitimate guys applying everything they know about stars, planetary systems, planetary evolution, and most especially, the evolution of life, to speculate on what life might be like on other worlds.

In a word, the outcome is WILD!


It's science meets science fiction. Scientists are often accused of being too conservative in their predictions about the future, but in this case, these guys expand our understanding of what life might be like on alien worlds. It's not just another simple variation on bilaterally symmetrical humanoids. The questions these scientists ask about life on alien worlds are at the core of the cross-disciplinary science astrobiology, which seeks to understand life here on Earth and to seek life elsewhere in the universe.


"Extraterrestrial" explores worlds that would have been promptly discarded by planetary scientists as unsuitable for life a decade ago. Before the discovery of gas giants orbiting their stars in just a few days, astronomers had concentrated on looking for planetary systems like our own. Systems that featured nice middle-sized, middle-aged stars like the Sun. The cooler stars like red dwarfs and the double stars that about comprise half the stars in the galaxy were thought unsuitable for stable planetary systems. Astronomers are rethinking those judgements.


It's all changed with the discovery of more than 150 planets in orbit about nearby stars. Most of these systems are not anything like ours. Solar system theorists went back to square one, and are busy rebuilding their models to explain the great diversity of planetary systems observed. New theories of planetary system formation and evolution are in the works. But, I'm getting too serious. "Extraterrestrial" is fun television taking on serious science.


"Extraterrestrial" considers life in wild places. First, there's Aurelia, a hot-and cold world that is tidally locked to a red-dwarf sun that forever shines on one side of the planet. The dark side is shrouded in perpetual ice. Such a planet would be a challenging place to live, but scientists think that extraterrestrial life may actually exist in the comfort zone between all sun and all ice -- not too hot, not too cold -- on such planets. Aurelia's creatures are based upon our knowledge of life, natural selection, stars and planets. Yep, there's predators and prey. I won't spoil the fun and fantasy by describing them, except to say that they have nothing in common with the "grays" that populate modern UFO myths.


"Blue Moon" is the second ET stop over, and it's more amazing. It orbits a giant ringed world that reminds me of Saturn, and in the distance its twin suns shine brightly. Consider the sorts of creatures could fly in a much denser atmosphere. Imagine an ocean of air, and you're starting to get the picture. Again, I won't spoil the fun.


As humans, we're on the leading edge of scientific research and exploration that will discover many more planets and planetary systems over the next few years. Within the decade, the Kepler Discovery Mission should find hundreds of Earth-size planets in habitable zones by observing them as they transit across the faces of their suns. Larger missions are in planning-- the Space Interferometry Mission (SIM), the Terrestrial Planet Finders (TPF-I and TPF-C), and the James Webb Space Telescope (JWST)--to seek nearby worlds and analyze their atmospheres for indications of life. We already know that planets are plentiful, but is life? We may know the answer in our lifetimes.


"Extraterrestrial" offers an imaginative trip into the future. Don't miss your chance to visit alien worlds from the comfort of your living room couch. "Extraterrestrial" is on the National Geographic Channel Monday, May 30 and Thursday, June 2. Check your local listings, or go to "Extraterrestrial" on the National Geographic web site: http://www.nationalgeographic.com/channel/extraterrestrial/


Visit SPACE.com for more space-related news including videos, launch coverage and interactive experiences. Explore our huge collection of Image Galleries, view our Image of the Day and vote for the Best Hubble Image of All Time. Follow the latest developments in the search for life in our universe in our SETI: Search for Life section. Sign up for our free daily email newsletter today!




Just...wow. I had no idea about the vast array of planets there are in the Universe. It's really interesting stuff. It's kinda cool how science is moving forward and really trying to catch everyone's interest. This show kinda reminds me of that new series of Discovery...Alien Planet...
http://dsc.discovery.com/convergence/alienplanet/alienplanet.html

also, do any of you guys participate in project SETI?

mps
05/26/05, 01:59 PM
...and to think some people just dismiss it all as bullshit without even thinking about it... really cool stuff, i dont know why i dont participate in SETI, just havent got around to it. i love all this stuff though.

when 4ever ends
05/26/05, 02:50 PM
yeah this stuff is really cool..what i dont get is the pople that are like aliens cant live there.. theres no oxygen

dude. hahah thats bullshit we dont know anything about them so why cant they live somewhere with no oxygen?

richter915
05/26/05, 03:24 PM
yeah this stuff is really cool..what i dont get is the pople that are like aliens cant live there.. theres no oxygen

dude. hahah thats bullshit we dont know anything about them so why cant they live somewhere with no oxygen?
exactly...for we all know...maybe Nitrogen gas is vital for them. I mean, hell there are certain species of bacteria on earth which die because of oxygen...it's like poison to them. People are just stupid.

when 4ever ends
05/26/05, 03:28 PM
common sense isnt always common.


haha my mom told me that

richter915
05/26/05, 04:02 PM
common sense isnt always common.


haha my mom told me that
haha, smart lady.

sleepygrlgreen
05/28/05, 12:35 PM
I've been using that SETI screen saver for a few years now. I'm a firm believer of their being life on other planets and I think it's absolutely amazing how far we have gotten with our knowledge of other planets and universes.

when 4ever ends
05/28/05, 12:52 PM
i dont think there are enough open minded scientsts on thhis subject

richter915
05/28/05, 01:16 PM
I've been using that SETI screen saver for a few years now. I'm a firm believer of their being life on other planets and I think it's absolutely amazing how far we have gotten with our knowledge of other planets and universes.
ur also a loser...don't forget that.

mps
05/28/05, 01:27 PM
If there is (intelligent) life outside of our world, which I don't believe there is, I doubt they are any more advance than us. I mean how far can you advance in less than 12000 years? Or if you believe in the big bang think about the odds of evolution in other places in the universe under different conditions, seem highly unlikely (to me). Even if you believe in different biological structures that would need different elements to live you are just being to hopeful for other intelligent life.

um where did the number 12000 come from? if youre talking about age of the universe, then think more around 14 billion years. and also we have no clue how fast they could have evolved under what conditions, but it its entirely possible.

mps
05/28/05, 02:10 PM
I'm not going to turn this into how old the earth is, go make another thread if you want to talk about that. ... you believe way to much in the "chance"
Anyways like I said, I don't believe in intelligent life outside of this world.

oh sorry, didnt know you meant the earth. anyways, whats the harm in believing? the possibilities are endless..

mps
05/28/05, 02:27 PM
america wastes money on everything..at least in my opinion this money wasted had better intentions behind it when it was spent compared to other things...

richter915
05/28/05, 03:32 PM
Do you know how much money America alone has wasted to find nothing?
haha remember when Bush said that he's gonna put a man on Mars and everyone believed it...hahaha.

btw, I think it's been mathematically calculated that life can indeed form on other planets.

sleepygrlgreen
05/28/05, 04:00 PM
i don't know if anyone remembers, but i have this book that i posted about called chariots of the gods. and the author, von daniken, brought up several points as to why it's possible for life to exist outside of earth.


"astronomer harlow shapley estimates that there are some 10^20 stars within the range of our telescopes. when shapley associates a planetary system with only one in a thousand stars, we may assume that it is a very cautious estimate. if we continue to speculate on the basis of this estimate and suspect the necessary conditions for life on only one star in a thousand, this calculation still gives a figure of 10^14. shapley asks: how many stars in this truly "astronomical" figure have an atmosphere suitable for life? one in a thousand? that would still leave the incredible figure of 10^11 stars with the prerequisites for life. even if we assume that only every thousandth planet out of this figure has produced life, there are still 100,000,000 planets on which we can speculate that life exists. this calculation is based on telescopes using the technology available today, but we must not forget that these are constantly being improved.
if we follow the hypothesis of biochemist dr. stanley miller, life and the conditions essential for life may have developed more quickly one some of these planets than on earth. if we accept this daring assumption, civilizations more advanced than our own could have developed on 100,000 planets.
the late willy ley, well known scientific writer, stated that the estimated number of stars in our milky way alone amounts to 30 billion. the assumption that our milky way contains at least 16 billion planetary systems is considered admissible by present-day astronomers. if we try to reduce the figures in question as much as possible and assume that the distances between planetary systems are so regulated that only in one case in a hundred does a planet orbit in the ecosphere of its own sun, that still leaves 180 million planets capable of supporting life. if we further assume that only one planet in a hundred that might support life actually does so, we should still have the figure of 1.8 million planets with life. let us further suppose that out of every hundred planets with life there is one on which creatueres with the same level of intellegence as homo sapiens live. then even this last supposition gives our milky way the vast number of 18,000 inhabited planets. since the latest counts give 100 billion fixed stars in our milky way, probaility indicates an imcomparibly higher figure that dr. ley puts forward in his cautious calculation.
without quoting fantastic figures or taking unknown galaxies into account, we may surmise that there are 18,000 planets comparitively close to the earth with conditions essential to life similar to those of our own planet. yet we can go even further to speculate that if only 1 percent of these 18,000 planets were actually inhabited, there would still be 180 left! there is no doubt about the existance of planets similiar to the earth- with a similar mixture of atmospheric gases, similar gravity, similar flora, and possibly even similar fauna. but is it even essential for the planets that support life to have conditions similar to the earth's? the idea that life can flourish only under terrestrial conditions has been made obsolete by research. it is a mistake to believe that life cannot exist without water and oxygen. they are called anaerobic bacteria. a given amount of oxygen acts like a poison on them. why should there not be higher forms of life that do not need oxygen?"

mps
05/29/05, 09:32 AM
A waste of money is simply a waste of money.

well im sure that if something is found, people will think it was worthwhile spending the money, as opposed to if another few hundred are killed in some pointless bombing in Iraq for example..

mps
05/29/05, 10:24 AM
find me another site which asserts this which is not relgious based. then maybe ill think about it. oh and about SETI, what if extraterrestrials dont use radio waves?

richter915
05/29/05, 12:07 PM
find me another site which asserts this which is not relgious based. then maybe ill think about it. oh and about SETI, what if extraterrestrials dont use radio waves?
agreed...if you want more behind your beliefs Trevor, you've gotta use non-religious sources. Like your website on x-evolutionist or whatever...if that lady had a PhD in in some field of biology...genetics let's say...and she still professed those beliefs...I would really consider what she said. Also...read sleepygrlgreen's post...that calculation was based on loose assumptions but it shows the possibility of extra-terrestrial life in the universe.

mps
05/29/05, 10:05 PM
if extraterrestials exist and they don't use radiowaves then you are still supporting my arguement about the SETI project, it's a complete waste of money.

I'm not saying it's a waste of money, I'm saying they may be using radio waves, they may not, who knows. it's just that I still think it's a good idea because it gives us a better chance of finding something rather than just sitting here doing nothing. but then I'm just offering a suggestion to why they might not have found anything yet..

Alex Djaferis
05/30/05, 01:30 AM
hahah the alien discussion.

mps. have u blocked me on msn or something.

IAmCountryMusic
05/30/05, 04:23 AM
SETI was so stupid, it was the screen saver on the macs at my middle school and my weird tech teacher actually believed that the wavelengths meant aliens were sending us signals.

mps
05/30/05, 11:41 AM
hahah the alien discussion.

mps. have u blocked me on msn or something.

nope. you always come online but are set as away or something so i never bother you :spacecraf