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POPSMost spectacular view in the Solar System Few sights in the solar system are more strikingly beautiful than softly hued Saturn embraced by the shadows of its stately rings. The Cassini Orbiter on its mission in deep space caught this rare occasion of Saturn eclipsing the Sun.
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POPSFive Reasons Why Aliens Will Make Contact with the Japanese First North Korea is rumored to have recently released a statement claiming that their nuclear reactor has the dual capability of communicating wirelessly with alien species up to 1,000 light years away in real time. Of course, we can't believe everything that the North Korean government says, but seriously, I wouldn't be surprised at all if they were already communicating with other planets. If that's the case, it should be relatively easy for Japan, a neighboring country, to intercept their signals with laser pulses and let the world know definitively what Kim Jong Il has known for decades—that there is life beyond Earth.
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POPSCould Jupiter wreck the solar system?
"So what's the likelihood Mercury could crash into the Earth? If it did, the asteroid that most likely wiped out the dinosaurs will seem like a drop in the ocean compared with a planet 4880 km in diameter slamming into us. There will be very little left after this wrecking ball impact. But here's the kicker: There is only a 1% chance that these gravitational instabilities of the inner Solar System are likely to cause any kind of chaos before the Sun turns into a Red Giant and swallows Mercury, Venus, Earth and Mars in 7 billion years time. So, no need to look out for death-wish Mercury quite yet… there's a very low chance that any of this will happen. But some good news for Mars; the researchers have also found that if the chaos does ensue, the Red Planet may be flung out of the Solar System, possibly escaping our expanding Sun. So, let's get those Mars colonies started! Well, within the next few billions of years anyhow…" Good stuff for the next science-fiction movie :-)
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POPSThe key to oil independence is a new electrical grid It seems that with alternative sources of energy, such as wind and solar, the United States has the potential means to substantially reduce our dependence on oil - especially once plug-in cars are on the market. But until we substantially upgrade our nation's electrical grid with modern technology that will enable the energy created by these sources to be transmitted intelligently around the county, their impact will be limited. It's going to take a greater commitment from Congress to jump start this. Making it happen will provide a huge boost to our economy, environment and political leverage with the Middle East, Russia, Venezuela and more.
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POPS'Major discovery' from MIT primed to unleash solar revolution Sunlight has the greatest potential of any power source to solve the world's energy problems, said Nocera. In one hour, enough sunlight strikes the Earth to provide the entire planet's energy needs for one year. "This is a major discovery with enormous implications for the future prosperity of humankind,"
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POPSUnintelligent Design At this point, 30 years after the Nobel Laureate Daniel Kahneman and his late collaborator Amos Tversky started documenting a rash of fallacies in human reasoning, the idea that the human mind would be "perfect in His image" is as outdated (and narcissistic) as the idea that the solar system would revolve around the planet earth. The only theory that can really make sense of these needless imperfections is Darwin's theory of natural selection, which holds that humans (and all other life forms) evolve through a blind process known as descent-with-modification, in which new life forms represent random modifications of earlier life forms -- with no central overseer to guide the process. Such a random process can, over time, lead populations of creatures to become more adapted to their environment, but it is also vulnerable to getting stuck, in the sort of good-enough-but-not-perfect solutions that mathematicians call local maxima.
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POPSWoW, Now THAT'S a rainstorm NASA's Spitzer Space Telescope observed a fledgling solar system like the one depicted in this artist's concept, and discovered deep within it enough water vapor to fill the oceans on Earth five times. This water vapor starts out in the form of ice in a cloudy cocoon (not pictured) that surrounds the embryonic star, called NGC 1333-IRAS 4B (buried in center of image). Material from the cocoon, including ice, falls toward the center of the cloud. The ice then smacks down onto a dusty pre-planetary disk circling the stellar embryo (doughnut-shaped cloud) and vaporizes. Eventually, this water might make its way into developing planets.
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POPSNASA Plans to Visit the Sun The two mysteries prompting this mission are the high temperature of the sun's corona and the puzzling acceleration of the solar wind: Mystery #1—the corona: If you stuck a thermometer in the surface of the sun, it would read about 6000o C. Intuition says the temperature should drop as you back away; instead, it rises. The sun's outer atmosphere, the corona, registers more than a million degrees Celsius, hundreds of times hotter than the star below. This high temperature remains a mystery more than 60 years after it was first measured. Mystery #2—the solar wind: The sun spews a hot, million mph wind of charged particles throughout the solar system. Planets, comets, asteroids—they all feel it. Curiously, there is no organized wind close to the sun's surface, yet out among the planets there blows a veritable gale. Somewhere in between, some unknown agent gives the solar wind its great velocity. The question is, what?
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POPSThe future of science...is art
"But before any of this can happen, our two existing cultures must modify their habits. First of all, the humanities must sincerely engage with the sciences. Henry James defined the writer as someone on whom nothing is lost; artists must heed his call, and not ignore science's inspiring descriptions of reality. At the same time, the sciences must recognize that their truths are not the only truths. No single area of knowledge has a monopoly on knowledge. As Karl Popper, an eminent defender of science wrote, "It is imperative that we give up the idea of ultimate sources of knowledge, and admit that all knowledge is human; that it is mixed with our errors, our prejudices, our dreams, and our hopes; that all we can do is to grope for truth even though it is beyond our reach." The struggle for scientific truth is long and hard and never ending. If we want to get an answer to our deepest questions—the questions of who we are and what everything is—we will need to draw from both science
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POPSRocket Scientists Say We'll Never Reach the Stars Even the most theoretically efficient type of propulsion, an imaginary engine powered by antimatter, would still require decades to reach Alpha Centauri, according to Robert Frisbee, group leader in the Advanced Propulsion Technology Group within NASA's Jet Propulsion Laboratory. And then there's the issue of fuel. It would take at least the current energy output of the entire world to send a probe to the nearest star
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POPSMicropbes Under Sea Floor Shows Possibility of Alien Life However, this population lives at an unusual rate. Single-celled organisms usually consume food for energy and then rather than grow larger, simply divide and reproduce themselves. While the Bacteria Escherichia Coli, as an example, doubles its numbers every 20 minutes, these Archaea double on the order of hundreds or thousands of years and consume very little energy. "In essence, these microbes are almost, practically dead by our normal standards," says House. "They metabolize a little, but not much." According to House, organisms metabolizing at such slow rates is what we could expect to find in other areas of our solar system because such environments have much less energy available than on Earth. Perhaps, similar organisms may be in hydrothermal vents beneath the ice of Europa -- the second moon of Jupiter -- or in subsurface aquifers of Mars.
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POPSBlue skies, scorched Earth? What is Global Dimming? If we were to eliminate global dimming all together without addressing global warming the increase in temperature and extreme weather might be more significant than previously predicted. This has been recorded with one full degree temperature change in just a few days of decreased pollution in the days following the 9/11 attacks . This reverse effect of dimming has been has been blamed along with global warming for increasing temperatures, appropriately called global brightening . No one wants smoggy skies but it could be smog and particulates that may be shielding us from the full consequences of the greenhouse gases we pump into our air daily. Clear blue skies are something many folks thinks of when they think of “going green” but those clear blue skies may hold more heat than we can handle.
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POPSScientists create solar cells with a twist. I suppose it won't be hard to have the power to at least power a Laptop. Perhaps a Solar powered tent for camping. We are finding new ways to transform energy into media we can use, and it, with the open information on the web is only bound to improve dramatically
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