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The first direct observation of the orbital structure of an excited hydrogen atom has been made by an international team of researchers. The observation was made using a newly developed "quantum microscope", which uses photoionization microscopy to visualize the structure directly. The team's demonstration proves that "photoionization microscopy", which was first proposed more than 30 years ago, can be experimentally realized and can serve as a tool to explore the subtleties of quantum mechanics.
Few have explored the remote volcanic islands of the Galapagos archipelago, an otherworldly landscape inhabited by the world's largest tortoises and other fantastical creatures that inspired Charles Darwin's theory of evolution.
Now they’re just messing with us. Physicists have long known that quantum mechanics allows for a subtle connection between quantum particles called entanglement, in which measuring one particle can instantly set the otherwise uncertain condition, or “state,” of another particle—even if it’s light years away. Now, experimenters in Israel have shown that they can entangle two photons that don’t even exist at the same time.
A map of the universe based on its oldest light is giving astronomers hope that they may be able to answer some of the deepest questions of the cosmos, including how it got started.
Earth is often described as the blue planet, suggesting that there is plenty of water. And indeed there is. Hardly any of it, though, is available for people to use.
The European Commission said Friday that it will ban for two years beginning in December pesticides blamed for killing the bees that pollinate food and fruit crops.
The decision to ban the three insecticides, made by chemicals giants Bayer and Syngenta, "marks another milestone towards ensuring a healthier future" for bees, EU Health Commissioner Tonio Borg said.
Most of us are used to thinking that the evolution of living organisms takes millions of years. But in the case of cockroaches, scientists say the resilient pests have a developed a fast-forward mechanism to save their own exoskeleton.
Researchers have revealed the remains of King Richard III, which were discovered under a city car park, were found in a hastily dug, untidy grave.
A new study by archaeologists at the University of York challenges evolutionary theories behind the development of our earliest ancestors from tree dwelling quadrupeds to upright bipeds capable of walking and scrambling.
The researchers say our upright gait may have its origins in the rugged landscape of East and South Africa which was shaped during the Pliocene epoch by volcanoes and shifting tectonic plates.
A week ago, scientists from Oregon Health and Science University and the Oregon National Primate Research Center announced that they had successfully used human skin cells to clone embryonic stem cells. In the few days since the researchers' work came online, though, the research has been found to contain a few key errors.
An anonymous online commenter on PubPeer, a post-publication peer review discussion site, highlighted four potential issues regarding image reuse in the paper, published online in the journal Cell on May 15
According to the New York Times, President Obama is "on the verge of backing" a proposal by the FBI to introduce legislation dramatically expanding the reach of the Communications Assistance for Law Enforcement Act, or CALEA. CALEA forces telephone companies to provide backdoors to the government so that it can spy on users after obtaining court approval, and was expanded in 2006 to reach Internet technologies like VoIP.
As President Obama gives a speech on national security—including defending U.S. use of drones to combat terrorism—Leila Sadat, JD, international law expert and professor of law at Washington University in St. Louis, argues that such targeted killing by unmanned planes may violate international humanitarian law. Legalities aside, she also questions whether it promotes U.S. interests abroad.
NEW YORK — Robots are simply more efficient than humans at certain tasks. They already excel at building cars, exploring distant planets and hunting for explosives, but it turns out that robots might also evolve much faster than their flesh-and-blood counterparts.
Nick Cheney, a Ph.D. student at Cornell University, presented his research at an Inside Cornell lecture on May 21. Cheney has developed a method by which complex computer simulations in a specific virtual environment — robots, by his definition — can evolve from selective pressures, just like animals in nature, but on a timescale of days instead of countless generations.
In Star Trek: The Next Generation, we were introduced to food replicators: devices capable of fiddling with reality at the subatomic level to reproduce everything edible, from steaks to snacks to steaming cups of tea. In reality, such fanciful devices — based on the show’s equally far-fetched transporter technology — probably couldn’t exist, but that doesn’t mean something like 3D food printing might not (eventually) get the job done just as effectively.
This weekend, three planets will nestle together in the western sky at twilight to form a rarely seen glowing triangle. With good timing and a bit of luck, you should be able to see it without a telescope.
Mercury, Venus, and Jupiter have been converging in the sky in the past month and will form their tightest clump on Sunday, May 26. This triple conjunction — visible from most of North America and Europe — will be easiest to see with the naked eye between 30 and 60 minutes after sunset, according to NASA.
Chinese astronomers, actively searching for Earth-like planets using survey instruments in Antarctica, believe efforts to seek an extra-solar planet that that harbors life will soon be rewarded. "It's highly possible that human beings might find such a planet in the coming few years," said Lifan Wang, an astronomer at Texas A&M University in College Station, and director of the Chinese Centre for Antarctic Astronomy in Nanjing.
Actor Leonardo DiCaprio plans to fly to space on Virgin Galactic's new commercial spaceliner, along with the winning bidder in a charity auction at the Cannes film festival, according to news reports.
NASA isn't planning a return trip to the moon, but private companies are speculating on the Moon's tourism and colonization possibilities. How much would you pay for a trip?
Near-Earth Objects (NEO) have long been a dilemma for scientists, especially since the discovery of 99942 Apophis in 2004. Apophis was first believed to be heading directly towards earth, and created a bit of a stir when people realized that it could hit earth in 2029. However, since then, due to several recalculations and lucky happenstances, the asteroid has only a 1 in 45,000 chance of hitting earth.
Small space rocks are carving fresh craters into the Martian surface more often than previously thought, researchers say. A new study finds that there are more than 200 asteroid impacts on the Red Planet every year.
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