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POPSNASA launches probe to study edge of solar system "The interstellar boundary regions are critical because they shield us from the vast majority of dangerous galactic cosmic rays, which otherwise would penetrate into Earth's orbit and make human spaceflight much more dangerous," David McComas, IBEX principal investigator from the Southwest Research Institute (SwRI) in San Antonio, Texas, said recently.
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POPSFour Reasons Not to Give Up on Interstellar Travel It looks far, dark, and cold... Yet, 120 years ago, flight was science fiction as well. C. G. Jung said that all dreams of space travel are just an escape from one most difficult challenge of all, that is the journey to man's inner space. :-) ...and see my clip from last week on suggested FTL drive. It seems the motivation to escape an inner journey just grows.
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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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POPSString Theory Faster-Than-Light Drive Proposed Dreams of interstellar travel may need to be put on hold for the moment, however. Cleaver and Obousy estimate that the amount of energy needed to influence the extra dimension is equivalent to the entire mass of Jupiter being converted into pure energy for a ship measuring roughly 10 meters by 10 meters by 10 meters. "That is an enormous amount of energy," Cleaver said. "We are still a very long ways off before we could create something to harness that type of energy." But what if we could make ourselves very very small??? I am ready to squeeze myself quite a bit to get really far... :-)
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POPSWater-- the background of life "We previously thought proteins would affect only those water molecules directly stuck to them," Gruebele said. "Now we know proteins will affect a volume of water comparable to their own. That's pretty amazing." i find this description of water sexy :0
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POPSSolar System Dented, Not Round The "bottom" of the egg is flattened by a permanent clash of particles, as the outbound solar wind smashes into atomic debris hurtling in from interstellar space, the scientists theorize. Voyager 2 also crossed the "termination shock" several times within the space of a single day, showing that the boundary is in perpetual flux, like the ebb-and-flow of a tide.
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POPSVoyager 2 Finds Lopsided Solar System Still transmitting, the three-decade-old craft encounters turbulence in solar wind. Hurtling through space 31 years after its launch, the Voyager 2 spacecraft has sent back the most detailed view yet of the shock wave that marks the thinning of the solar wind, the charged particles streaming from the sun. That would mean they have exited the solar system and entered the interstellar medium. NASA engineers estimate that both probes' plutonium power packs have the potential to keep them broadcasting data until 2025. If we're lucky, Jokippi says, they'll let us know what they find.
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POPSSolar system a bit squashed, not nicely round "Imagine a balloon is being blown up by the solar wind. You might imagine that if you took a balloon, which is mainly spherical, and pushed it against the wall, it would be blunted on one side," said Edward Stone of the California Institute of Technology, one of the scientists involved in the research.
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POPSFive questions for a galactic visitor The simple fact is that certain people have always opposed progress while other, better people have driven it. "Experts" decried boiled water as unhealthy compared the vital stuff straight from the river, cursed antibiotics as a temporary placebo, and confidently declared that computers were nothing but expensive toys. As an intelligent species we must make every effort to contact anyone or thing we can - and if you don't like it, there are some lovely caves you can move back to. what are your questions?
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POPSYoungest Exploded Star In The Milky Way Is Discovered
It turns out, Green and his team came across the remnants, now called G1.9+0.3, more than 20 years ago using the Very Large Array (VLA) radio telescope in Socorro, NM, and estimated the object’s age to be 400-1,000 years old. It is near the center of the Milky Way, some 25,000 light-years from Earth. By comparing notes, the astronomers learned the images taken more than two decades apart documented the expansion of debris from the star's explosion. The images taken in 2007 were about 16 percent larger than the ones taken in 1985. "This is a huge difference," said Reynolds. "It means the explosion debris is expanding very quickly, which in turn means the object is much younger than we originally thought." Reynolds also observed the object with the VLA radio telescope to confirm the supernova remnant's rapid expansion. Unlike visible-light telescopes, radio and X-ray telescopes can penetrate the thick clouds of gas and dust in our galaxy.
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POPSGeneral Introduction - OA ClipSeries In this post-singularity, post-scarcity world, any goal a sapient being can name, any goal that doesn't violate the laws of physics, or fall apart under its own inconsistencies, can be achieved. But that doesn't mean all problems have been solved...
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