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Dec 7, 2020
US Space Force and NASA Looking to Privatize Nuclear Spacecraft Production
Posted by Quinn Sena in categories: chemistry, Elon Musk, nuclear energy, space travel
LOS ANGELES, CA / ACCESSWIRE / December 7, 2020 / US Nuclear (OTCQB: UCLE) is the prime contractor to build MIFTI’s fusion generators, which could be used in the relatively near future to power the propulsion systems for space travel and provide plentiful, low-cost, clean energy for the earth and other planetary bases once our astronauts get to their destination, be it the moon, Mars, Saturn or beyond. Chemical powered rockets opened the door to space travel, but are still far too slow and heavy even to travel to distant planets within our solar system, let alone travel to other stars. Accordingly, NASA is now looking to nuclear powered rockets that can propel a space vessel at speeds close to the speed of light and thermonuclear power plants on the moon and Mars, as these are the next steps towards space exploration and colonization.
The US Energy Secretary, Dan Brouillette, recently said, “If we want to engage in outer space, or deep space as we call it, we have to rely upon nuclear fuels to get us there… that will allow us to get to Mars and back on ‘one tank of gas’.” This is made possible by the large energy density ratio which makes the fuel weight for chemical fuels ten million times higher than the fuel that powers the fusion drive. NASA is now relying on private companies to build spaceships: big companies like Boeing, but more and more on high-tech startups such as Elon Musk’s Space-X, Jeff Bezos’s Blue Origin, and Richard Branson’s Virgin Atlantic.
While nuclear fission has been considered as a basis for the next generation of rocket engines, the fuel used for fission is enriched uranium, which is scarce, costly, unstable, and hazardous. On the other hand, thermonuclear fusion uses a clean, low-cost isotope of hydrogen from ordinary seawater, and one gallon of this seawater extraction yields about the same amount of energy as 300 gallons of gasoline.
Dec 7, 2020
Jupiter and Saturn will come within 0.1 degrees of each other, forming the first visible “double planet” in 800 years
Posted by Quinn Sena in category: space
“Alignments between these two planets are rather rare, occurring once every 20 years or so, but this conjunction is exceptionally rare because of how close the planets will appear to one another,” Rice University astronomer Patrick Hartigan said in a statement. “You’d have to go all the way back to just before dawn on March 4, 1226, to see a closer alignment between these objects visible in the night sky.”
Aligning with the winter solstice on December 21, 2020, the two planets will be just 0.1 degrees apart — less than the diameter of a full moon, EarthSky says. The word “conjunction” is used by astronomers to describe the meeting of objects in our night sky, and the great conjunction occurs between the two largest planets in our solar system: Jupiter and Saturn.
The planets will be so close, they will appear, from some perspectives, to overlap completely, creating a rare “double planet” effect.
Dec 7, 2020
Researchers Invent Material That Could Create Invisibility Cloak
Posted by Raphael Ramos in categories: cyborgs, materials
Dec 7, 2020
How banks use AI to catch criminals and detect bias
Posted by Genevieve Klien in categories: finance, information science, robotics/AI, terrorism
Imagine an algorithm that reviews thousands of financial transactions every second and flags the fraudulent ones. This is something that has become possible thanks to advances in artificial intelligence in recent years, and it is a very attractive value proposition for banks that are flooded with huge amounts of daily transactions and a growing challenge of fighting financial crime, money laundering, financing of terrorism, and corruption.
The benefits of artificial intelligence, however, are not completely free. Companies that use AI to detect and prevent crime also deal with new challenges, such as algorithmic bias, a problem that happens when an AI algorithm causes systemic disadvantage for a group of a specific gender, ethnicity, or religion. In past years, algorithmic bias that hasn’t been well-controlled has damaged the reputation of the companies using it. It’s incredibly important to always be alert to the existence of such bias.
For instance, in 2019, the algorithm running Apple’s credit card was found to be biased against women, which caused a PR backlash against the company. In 2018, Amazon had to shut down an AI-powered hiring tool that also showed bias against women.
Dec 7, 2020
7 Best Genetic Analysis Websites in 2021 Compared
Posted by J.P. Medved in categories: genetics, life extension, time travel
I didn’t realize there were so many 3rd-party genetic analysis services. If you’ve already done something like 23andMe have you tried uploading your raw DNA data to one of these other websites?
Note: This piece on genetic analysis is the third in our series of posts about DNA tests for health and longevity. To better understand the basics of DNA and the different types of DNA tests on the market please go back and read our first piece on The Benefits of Genetic Testing for Longevity, and for an in-depth comparison of DNA testing companies please read the second piece on the Best DNA Tests for Health and Longevity.
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Using NASA’s Transiting Exoplanet Survey Satellite (TESS), astronomers have discovered two new young planetary systems. They found that two stars not older than 320 million years, namely TOI-251 and TOI-942, are orbited by a mini-Neptune planet and two Neptune-sized exoplanets. The finding is reported in a paper published November 26 on arXiv.org.
TESS is conducting a survey of about 200,000 of the brightest stars near the sun with the aim of searching for transiting exoplanets. So far, it has identified over 2,400 candidate exoplanets (TESS Objects of Interest, or TOI), of which 82 have been confirmed so far.
Recently, a team of astronomers led by George Zhou of the Harvard-Smithsonian Center for Astrophysics (CfA) in Cambridge, Massachusetts, confirmed another three planets. Between August and December 2018, TESS observed two stars: TIC 224225541 (TOI-251) and TIC 146520535 (TOI-942), which resulted in the detection of transit signals in the light curves of these objects. The planetary nature of these signals was confirmed by follow-up photometric and spectroscopic observations using ground-based facilities.
Dec 7, 2020
MIT’s ABRACADABRA Instrument: Pulling the Secrets of Dark Matter Out of a Hat
Posted by Genevieve Klien in categories: cosmology, particle physics
MIT grad student Chiara Salemi and Professor Lindley Winslow use the ABRACADABRA instrument to reveal insights into dark matter.
On the first floor of MIT’s Laboratory for Nuclear Science hangs an instrument called “A Broadband/Resonant Approach to Cosmic Axion Detection with an Amplifying B-field Ring Apparatus,” or ABRACADABRA for short. As the name states, ABRACADABRA’s goal is to detect axions, a hypothetical particle that may be the primary constituent of dark matter, the unseen and as-of-yet unexplained material that makes up the bulk of the universe.
Dec 7, 2020
Aptera is back with a new EV it says doesn’t need charging
Posted by Genevieve Klien in categories: sustainability, transportation
The three-wheeled, two-person vehicle is curvy and lightweight.
Aptera, the company that shuttered in 2011 after failing to secure funding for its three-wheeled electric car, is back with a new solar electric vehicle it claims never needs charging, at least, for most drivers. And it predicts its top model, with a battery of 100 kWh, can get up to 1,000 miles of range.
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