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May 7, 2020

Un test para identificar COVID-19 asintomático

Posted by in categories: biotech/medical, cybercrime/malcode

No se aceptan los comentarios con contenidos, enlaces o nombres de usuarios que se consideren insultantes. –No se aceptan los comentarios que apoyen violaciones de los derechos humanos. –No se admitirán los ataques ni insultos a los otros participantes en el sistema de comentarios. –No se admiten comentarios con contenidos o enlaces que se consideren publicidad, spam, pornografía o material protegido por derechos de autor. –Los comentarios sin sentido o repetidos serán eliminados. –Medicina21 se reserva el derecho a eliminar los comentarios que no se ajusten a estas normas.

May 7, 2020

Exclusive: Astronomers Might Have The First-Ever Detection of a Fast Radio Burst in Our Own Galaxy

Posted by in category: space

A Milky Way magnetar called SGR 1935+2154 may have just massively contributed to solving the mystery of powerful deep-space radio signals that have vexed astronomers for years.

On 28 April 2020, the dead star — sitting just 30,000 light-years away — was recorded by radio observatories around the world, seemingly flaring with a single, millisecond-long burst of incredibly bright radio waves that would have been detectable from another galaxy.

In addition, global and space X-ray observatories recorded a very bright X-ray counterpart.

May 7, 2020

SpaceX describes exactly how they’re planning to make Starlink satellites less visible from Earth

Posted by in categories: biotech/medical, Elon Musk, engineering, internet, satellites

In 2015, Elon Musk announced that his company, SpaceX, would be deploying satellites to orbit that would provide high-speed broadband internet access to the entire world. Known as Starlink, SpaceX began deploying this constellation in May of 2019 with the launch of the first 60 satellites. As of April 22, a total of 422 satellites have been added to the Starlink constellation, and the response hasn’t been entirely positive.

In addition to fears that we’re adding to the problem of “space junk,” there are also those who’ve expressed concern that Starlink and other constellations could have a negative impact on astronomy. In response, SpaceX recently announced that it will be instituting changes in how the satellites are launched, how they orbit the Earth, and even how reflective they are in order to minimize the impact they have on astronomy.

These changes were the subject of a presentation made during the Decadal Survey on Astronomy and Astrophysics 2020 (Astro2020) hosted by the National Academy of Sciences, Engineering, and Medicine. As part of the Optical Interference from Satellite Constellations Meeting held on Monday, April 27th, the Starlink Panel (which included Musk) presented how the company hopes to minimize light pollution caused by their constellation.

May 7, 2020

Solar slingshot could help spacecraft intercept interstellar objects

Posted by in category: space

An MIT research proposal outlines a new method for rendezvousing with interstellar objects (ISOs) like ‘Oumuamua using a solar slingshot technique. By using solar sails to position deep-space probes on the edge of the solar system, the idea is to use the gravitational pull of the Sun to accelerate the spacecraft and set it on an intercept course with an interstellar visitor.

When ‘Oumuamua passed by in 2017, it was a truly historic event. For the first time, an object from interstellar space was detected entering the solar system. Traveling on a hyperbolic trajectory, it flew through the inner system before returning to the outer darkness, never to return. As it did so, observatories around the world focused on the object, giving scientists their first close-up glimpse at something that didn’t originate in our system.

However, a glimpse was all they had time for. Ideally, a long, leisurely look would have been preferable, but there wasn’t any time to even plan a mission to send a spacecraft to visit ‘Oumuamua – much less launch one. Worse, such a mission would have faced major technical challenges. Not the least of which being the requirement of a massive rocket to reach the needed velocity to overtake the object.

May 7, 2020

Unexpected Scientific Insights into COVID-19 From AI Machine Learning Tool

Posted by in categories: biotech/medical, robotics/AI

A team of materials scientists at Lawrence Berkeley National Laboratory (Berkeley Lab) – scientists who normally spend their time researching things like high-performance materials for thermoelectrics or battery cathodes – have built a text-mining tool in record time to help the global scientific community synthesize the mountain of scientific literature on COVID-19 being generated every day.

The tool, live at covidscholar.org, uses natural language processing techniques to not only quickly scan and search tens of thousands of research papers, but also help draw insights and connections that may otherwise not be apparent. The hope is that the tool could eventually enable “automated science.”

“On Google and other search engines people search for what they think is relevant,” said Berkeley Lab scientist Gerbrand Ceder, one of the project leads. “Our objective is to do information extraction so that people can find nonobvious information and relationships. That’s the whole idea of machine learning and natural language processing that will be applied on these datasets.”

May 7, 2020

Amazon reportedly registers interest in bankrupt OneWeb’s broadband satellite constellation assets

Posted by in categories: Elon Musk, government, satellites

https://youtube.com/watch?v=YIrIt0R47Z8

Amazon is among the players in a bankruptcy bidding game with the assets of the OneWeb satellite venture at stake, according to Space Intel Report.

Quoting unnamed industry officials, Space Intel Report’s Peter B. de Selding says other potential bidders include two Chinese organizations that are apparently acting on behalf of the Chinese government; the Paris-based satellite operator Eutelsat, which apparently has the backing of the French government and several other European Union member states; and Cerberus Capital Management, a New York-based private equity firm with interesting connections.

Continue reading “Amazon reportedly registers interest in bankrupt OneWeb’s broadband satellite constellation assets” »

May 7, 2020

SpaceX Starship: watch the impressive test ahead of full-size launch

Posted by in category: space travel

SpaceX has put the Starship SN4 through its paces ahead of an expected launch.

May 7, 2020

Gigantic new 3D map traces every neuron in a tiny mouse brain

Posted by in category: neuroscience

A years-long Allen Institute for Brain Science project to map the entire mouse brain is complete, and you can explore it now.

May 7, 2020

Behind the numbers: The rapidly falling LCOE of battery storage

Posted by in category: energy

analysis from BloombergNEF (BNEF) highlights that for applications requiring two hours of energy, batteries are beating gas peaker plants. While the 2019 LCOE benchmark for lithium-ion battery storage hit US$187 per megawatt-hour (MWh) already threatening coal and gas and representing a fall of 76% since 2012, by the first quarter of this year, the figure had dropped even further and now stands at US$150 per megawatt-hour for battery storage with four hours’ discharge duration.


The cost of battery energy storage has continued on its trajectory downwards, making it more and more competitive with fossil fuels. That in itself will come as no surprise to many in the industry. As we wrote last week, analysis from BloombergNEF (BNEF) highlights that for applications requiring two hours of energy, batteries are beating gas peaker plants. While the 2019 LCOE benchmark for lithium-ion battery storage hit US$187 per megawatt-hour (MWh) already threatening coal and gas and representing a fall of 76% since 2012, by the first quarter of this year, the figure had dropped even further and now stands at US$150 per megawatt-hour for battery storage with four hours’ discharge duration.

Andy Colthorpe spoke to Tifenn Brandily, BNEF’s lead author of the latest LCOE report, which covers solar, wind and more than 20 other technologies including battery storage from 47 regional markets around the world.

Continue reading “Behind the numbers: The rapidly falling LCOE of battery storage” »

May 7, 2020

Joe Rogan Experience #1470 — Elon Musk

Posted by in categories: business, Elon Musk

African American Billionaire Rocket Scientist SpaceX CEO Elon Musk has a new interview from Podcast Host Joe Rogan after having his newborn baby boy today. The interview is about the future of humanity.


Elon Musk is a business magnet, investor and engineer.