Slashdot

roice writes "The crazy hypercubists who created the 4D and 5D Rubik's cubes (here are previous Slashdot posts on the 4-D one and the 5-D one) have now developed a free working 4-dimensional software analogue of the Megaminx puzzle. Composed of 120 dodecahedral cells, the underlying structure is arguably the most beautiful of 4D geometrical shapes, with amazing symmetries and no analogue in dimensions higher than 4. Though some have already begun working on solutions for this 'Hyperminx,' it has yet to be solved by anyone. Also, when it comes to number of positions, it dwarfs the previous puzzles by many thousands of orders of magnitude!"

modernphysics writes "The Outreach Department at Canada's Perimeter Institute for Theoretical Physics offers a wide array of online lecture playbacks examining hot topics in modern physics and beyond. Presentations include Neil Turok's 'What Banged?,' John Ellis with 'The Large Hadron Collider,' Nima Arkani-Hamed with 'Fundamental Physics in 2010,' Paul Steinhardt with 'Impossible Crystals,' Edward Witten with 'The Quest for Supersymmetry,' Seth Lloyd with 'Programming the Universe,' Anton Zeilinger with 'From Einstein to Quantum Information,' Raymond Laflamme with 'Harnessing the Quantum World,' and many other talks. The presentations feature a split-screen presentation with the guest speaker in one frame and their full-frame graphics in the other."

StonyandCher writes in about a collaboration between NASA and a leading Australian exploration and mining scientist, Dr. Brent McInnes, to search for signs of ancient life on Mars. The plan is to develop and miniaturize the "Alphachron" — an exploration technology currently employed by the Australian minerals industry to determine the age of minerals. If the Alphachron can be miniaturized, it could fly with the next rover mission set for launch in 2010. "The highest priority is to understand when liquid water was present on Mars. 'The same minerals that can be found in [Western Australia]... can also be found on Mars,' McInnes said. Accordingly, by using the Alphachron to date minerals on Mars and thus tell when liquid water may have been present, it can be inferred when life may have been sustainable near the surface of the planet."

Smivs writes "US researchers say they have developed an effective way to kill unwanted plants and animals that hitch a ride in the ballast waters of cargo vessels. Tests showed that a continuous microwave system was able to remove all marine life within the water tanks. The UN lists 'invasive species' dispersed by ballast water discharges as one of the four main threats to the world's marine ecosystems. For example European zebra mussels (Dreissena polymorpha) have infested more than 40% of the US's inland waterways. Between 1989 and 2000, up to $1B is estimated to have been spent on controlling the spread of the alien invader."

mattnyc99 writes "Popular Mechanics is reporting that NASA — faced with the looming retirement of the space shuttle, and planning for longer missions like the one to Mars we've been discussing — is looking to free up its budget and depend a lot more on private space startups to carry key payloads into orbit in the next few years. For an agency so steeped in bureaucracy, it seems like everyone from NASA chief Mike Griffin to contracted officials to the key players in this in-depth podcast roundtable is finally acknowledging that commercial rocketeering (space tourists aside) is a more efficient a means of getting back into space for NASA. Quoting: 'Because of a new focus for NASA's strategic investments — not to mention incentives like the Ansari X Prize, which spurred the space-tourism business, and the Google Lunar X Prize, which could do the same for payloads — private-sector spaceships could be ready for government service soon, says Sam Scimemi, who heads NASA's Commercial Orbital Transportation Services program. "The industry has grown up," he tells PM. "It used to be that only NASA or the Air Force could do such things."'"

Wired is reporting that Cornell University researchers genetically modified a human embryo in 2007, but have only recently been gaining publicity as their work is being reviewed. "The research raises a number of thorny ethical questions. Though adding a fluorescent protein was merely a proof-of-principle step, scientists say that modified embryos could be used to research human diseases. They say embryos wouldn't be allowed to develop for more than a few weeks, much less implanted in a woman and brought to term."

PHPNerd writes "Over at space.com is an interesting article about the first space lawyer. He graduated from the University of Mississippi. 'Any future space lawyer might have to deal with issues ranging from the fallout over satellite shoot-downs to legal disputes between astronauts onboard the International Space Station. The expanding privatization of the space sector may also pose new legal challenges [...] "We are particularly proud to be offering these space law certificates for the first time, since ours is the only program of its kind in the U.S. and only one of two in North America," said Samuel Davis, law dean at the University of Mississippi.'"

paradoxSpirit writes "Physorg has a paper comparing the cost of text messaging versus the cost of getting data from Hubble Space Telescope. From the article: 'The maximum size for a text message is 160 characters, which takes 140 bytes because there are only 7 bits per character in the text messaging system, and we assume the average price for a text message is 5p. There are 1,048,576 bytes in a megabyte, so that's 1 million/140 = 7490 text messages to transmit one megabyte. At 5p each, that's £374.49 [$732.95] per MB — or about 4.4 times more expensive than the 'most pessimistic' estimate for Hubble Space Telescope transmission costs." "Hubble is by no means a cheap mission — but the mobile phone text costs were pretty astronomical!""

QuantumG writes "Greg Zsidisin appeared on The Space Show today to ask Where Are The Space Advocates?. For the first time in decades Space is once again a political issue with all four major presidential candidates having something to say about space policy and yet nothing is being heard from space advocates. As we enter a new "Space Nexus" like we did after Apollo, now is a critical time to let your representatives know how you feel about space exploration, and yet no-one has anything to say." The show itself is a podcast if you want to give it a listen. Personally I'm hoping that this election puts space exploration back in the public consciousness- Apollo inspired a generation to learn math and science. I want my kid to be inspired by something bigger than that. And as some readers have noted- there are 3 candidates left (and really only two) so the submitter is probably high.

Science News reports on a study relating (in a loose way) the efficiency of a national government with the size of its cabinet. Researchers in Vienna found that the development level of countries, as a proxy for the efficiency of their governments, is in general lower for countries with more members in the national cabinets. They then went on to model cabinet members as nodes in a network and found support for the observed correlation. There was even specific evidence for the decades-old observation of English historian Cyril Northcote Parkinson that decision-making is severely impaired in committees of more than 20 people. The US is getting close to Parkinson's cutoff, at 17.