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May 17, 2018
Astronomers release most complete ultraviolet-light survey of nearby galaxies
Posted by Genevieve Klien in categories: evolution, space
Capitalizing on the unparalleled sharpness and spectral range of NASA’s Hubble Space Telescope, an international team of astronomers is releasing the most comprehensive, high-resolution ultraviolet-light survey of nearby star-forming galaxies.
The researchers combined new Hubble observations with archival Hubble images for 50 star-forming spiral and dwarf galaxies in the local universe, offering a large and extensive resource for understanding the complexities of star formation and galaxy evolution. The project, called the Legacy ExtraGalactic UV Survey (LEGUS), has amassed star catalogs for each of the LEGUS galaxies and cluster catalogs for 30 of the galaxies, as well as images of the galaxies themselves. The data provide detailed information on young, massive stars and star clusters, and how their environment affects their development.
“There has never before been a star cluster and a stellar catalog that included observations in ultraviolet light,” explained survey leader Daniela Calzetti of the University of Massachusetts, Amherst. “Ultraviolet light is a major tracer of the youngest and hottest star populations, which astronomers need to derive the ages of stars and get a complete stellar history. The synergy of the two catalogs combined offers an unprecedented potential for understanding star formation.”
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May 17, 2018
Black Hole Traffic Accidents May Produce Monster Mergers
Posted by Matthew Holt in category: cosmology
This post is regarding binary black holes, supermassive black holes and LIGO detections.
Black holes formed from the death of a single star may collect and collide with other black holes to form even more-massive objects.
May 17, 2018
Cancer ‘vaccine’ eliminates tumors in mice
Posted by Alexandros El in category: biotech/medical
Injecting minute amounts of two immune-stimulating agents directly into solid tumors in mice can eliminate all traces of cancer in the animals, including distant, untreated metastases, according to a study by researchers at the Stanford University School of Medicine.
The approach works for many different types of cancers, including those that arise spontaneously, the study found.
The researchers believe the local application of very small amounts of the agents could serve as a rapid and relatively inexpensive cancer therapy that is unlikely to cause the adverse side effects often seen with bodywide immune stimulation.
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May 17, 2018
This physicist’s ideas of time will blow your mind
Posted by Genevieve Klien in categories: information science, mathematics, quantum physics
Time feels real to people. But it doesn’t even exist, according to quantum physics. “There is no time variable in the fundamental equations that describe the world,” theoretical physicist Carlo Rovelli tells Quartz.
If you met him socially, Rovelli wouldn’t assault you with abstractions and math to prove this point. He’d “rather not ruin a party with physics,” he says. We don’t have to understand the mechanics of the universe to go about our daily lives. But it’s good to take a step back every once in a while.
“Time is a fascinating topic because it touches our deepest emotions. Time opens up life and takes everything away. Wondering about time is wondering about the very sense of our life. This is [why] I have spent my life studying time,” Rovelli explains.
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May 17, 2018
How 3D Printing Is Unlocking A New Space Race
Posted by Klaus Baldauf in categories: 3D printing, government, satellites
A new space race is in the works, thanks to 3D printing. This time around, it’s not about large government agencies vying to blast human astronauts into uncharted territory. Instead, today’s competitors are aerospace startups like Rocket Lab and Relativity Space that are trying to launch satellites into orbit.
May 17, 2018
Achieving scalability in quantum computing
Posted by Klaus Baldauf in categories: computing, quantum physics
While a variety of quantum systems exist today, many are unable to scale to solve some of the world’s most challenging problems. Explaining the real-world obstacles of building a quantum system that scales, this post explores how Microsoft addresses these challenges through a topological qubit.
May 17, 2018
The right to die and the right to live
Posted by Nicola Bagalà in categories: biotech/medical, law, life extension
Somewhat paradoxically, euthanasia and life extension share a common goal—ending pointless suffering.
On May 10 this year, Australian ecologist David Goodall took his own life before aging could. The scientist, aged 104, reportedly said he “regretted” having reached that age, because the quality of his life had significantly deteriorated as a consequence of his declining health. Unhappy with his condition, though not suffering from any terminal disease—except for aging itself—Goodall opted to end his life through assisted suicide. As the practice is currently not allowed in Australia, he flew with friends and family all the way to a clinic in Switzerland, where he flipped a switch and administered his own lethal injection while listening to Beethoven’s Ninth Symphony. Interestingly, the cost of his trip to Switzerland was covered with money collected through a crowdfunding campaign.
A matter of rights
May 17, 2018
Selfish Ledger: Google’s mass sociology experiment
Posted by Philip Raymond in categories: big data, complex systems, DNA, ethics, evolution, genetics, information science, internet, surveillance
Check out the internal Google film, “The Selfish Ledger”. This probably wasn’t meant to slip onto a public web server, and so I have embedded a backup copy below. Ping me if it disappears. I will locate a permanent URL.
This 8½ minute video is a lot deeper—and possibly more insipid—than it appears. Nick Foster may be the Anti-Christ, or perhaps the most brilliant sociologist of modern times. It depends on your vantage point, and your belief in the potential of user controls and cat-in-bag containment.
He talks of a species propelling itself toward “desirable goals” by cataloging, data mining, and analyzing the past behavior of peers and ancestors—and then using that data to improve the experience of each user’s future and perhaps even their future generations. But, is he referring to shared goals across cultures, sexes and incomes? Who controls the algorithms and the goal filters?! Is Google the judge, arbiter and God?
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Researchers from the National Cancer Institute (NCI), the University of Kansas, and the National Center for Advancing Translational Science (NCATS) have discovered a compound that can block the spread of cancer cells.
Preventing cancer metastasis
Metastasis is how cancer spreads from an initial site to a secondary site within the host’s body; the newly pathological sites, then, are metastases. Metastasis is what makes some cancers so lethal and hard to treat unless they are caught before they spread.