Menu

Blog

Page 4827

Sep 21, 2021

Mars Was Always Destined to Die

Posted by in categories: alien life, chemistry

Mars is the solar system’s near-miss world. Earth may have gotten everything right when it came to sustaining life—atmosphere, water, proximity to the sun. Mercury, Venus and the outer planets, with their extreme temperatures and inhospitable chemistry, may have gotten everything wrong. Mars, on the other hand, came so close, yet fell short.

Thanks to data from rovers and other spacecraft, we know that the Red Planet once fairly sloshed with water—with dry deltas, riverbeds, and sea basins stamped into its surface. But 4 billion years ago, the Martian core cooled, shutting down the dynamo that sustained its magnetic field. That left the planet vulnerable to the solar wind, which clawed away the atmosphere, and allowed the Martian water to sputter into space. Before long—in geological terms—the planet was a desert.

At least that’s long been the thinking. But a new paper published Sept. 20 in the Proceedings of the National Academy of Sciences suggests otherwise. According to the new research, Mars was doomed from the start. Its small size—about half the diameter of Earth and less than one-ninth the mass—simply never produced the gravitational muscle to allow the planet to hold onto either its air or its water. With or without a magnetic field, Mars was destined to die.

Sep 21, 2021

Rolls-Royce Is Developing a Nuclear Reactor for Mining the Moon and Mars

Posted by in categories: Elon Musk, nuclear energy, space travel

The firm is looking into how a micro-nuclear reactor could be used to propel rockets while in space at huge speeds and how that technology could then be redeployed to provide energy for drilling, processing, and storage for “Moon mining” and possibly “Mars mining.”

Dave Gordon, head of the company’s defense division, said this work is possible thanks to Jeff Bezos and Elon Musk and their respective space companies.

He added that’s Rolls-Royce is the only company on the planet that does mechanical, electrical, and nuclear and a full end-to-end lifecycle of nuclear capability. He also noted that the firm could use its experience in developing nuclear-powered submarines for the Royal Navy for 60 years to apply what it learned to spacecraft since submarines and spacecraft are somewhat similar.

Sep 21, 2021

The Verge Hubless Electric Motorcycle Could Change Everything

Posted by in categories: sustainability, transportation

With its futuristic looks and revolutionary performance, the Verge TS hubless electric roadster is an eye-candy.

Sep 21, 2021

Why Africa is sending more satellites into space

Posted by in category: satellites

Africa’s space industry has been slow to take off, but it’s predicted to skyrocket in the next few years.

Since the continent’s first satellite launched more than 20 years ago, 44 have been sent into orbit by 13 African countries, according to consultancy Space in Africa. It says a further 125 are being developed by 23 countries, all expected to launch before 2025.

The payoff could be substantial. A 2021 report by the World Economic Forum estimates that data collected from space could unlock $2 billion a year in benefits for Africa.

Sep 21, 2021

Novel device for exploratory imaging enables about 1,000 times more access to brain tissue

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

Science is examining the brain’s neural activity for applications ranging from innovative therapies for brain-related injuries and disease to computational learning architectures for artificial intelligence and deep neural networks.

A research team has developed a tool that lets researchers see more of a live mouse’s brain, to make discoveries that can advance research into the neural circuit mechanisms that form the underlying behavior of the human brain. The tool overcomes the drawback of traditional brain probes—the small amount of tissue they can access, which limits their ability to image neurons of interest.

The innovation is to insert an imaging probe with side-viewing capabilities into a previously inserted optically matched channel—an ultrathin-wall glass capillary—to convert deep brain imaging into endoscopic imaging. The operator can freely rotate the probe to image different , getting a 360-degree view for imaging along the entire length of the inserted probe. This large-volume imaging enables an increase of about 1,000 times in access volume, compared with what is available for imaging at the tip of typical miniature imaging probes.

Sep 21, 2021

A new way to solve the ‘hardest of the hard’ computer problems

Posted by in category: computing

© | Student Academic Services Building | 281 W. Lane Ave. | Columbus, Ohio 43,210 | 614–292-OHIO

Sep 21, 2021

GSK teams with King’s College to use AI to fight cancer

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

The pharmaceuticals firm GSK has struck a five-year partnership with King’s College London to use artificial intelligence to develop personalised treatments for cancer by investigating the role played by genetics in the disease.

The tie-up, which involves 10 of the drug maker’s artificial intelligence experts working with 10 oncology specialists from King’s across their labs, will use computing to “play chess with cancer”, working out why only a fifth of patients respond well to immuno-oncology treatments.

Sep 21, 2021

GM unveils new electric motors that will power its future EVs, starting with Hummer EV

Posted by in categories: sustainability, transportation

GM has unveiled its latest series of new electric motors that will power its future electric vehicles, starting with the Hummer EV.

With the Bolt EV coming out in 2,016 GM has been selling electric vehicles for a long time, but the automaker has also been stuck on older EV technology.

GM is finally starting to release its latest EV technology, Ultium, in a series of new electric vehicles.

Sep 21, 2021

Sunlight and salt water join forces in electricity-free cooling system

Posted by in category: energy

There are many parts of the world which lack infrastructure, but that get a lot of sunlight … which makes buildings uncomfortably hot. A new system could help, as it uses a combination of sunlight and salt water – but no electricity – to produce a cooling effect.

Currently being developed at Saudi Arabia’s King Abdullah University of Science and Technology (KAUST), the experimental setup takes advantage of a natural “phase-change” phenomenon in which energy is absorbed as salt crystals dissolve within water. This means that if salt is added to warm water, that water rapidly cools as the salt dissolves.

After some experimentation with different types of salt, it was found that one known as ammonium nitrate worked best. Mainly because it’s highly water-soluble, its cooling power is four times greater than that of the next-best salt, ammonium chloride. As an added bonus, ammonium nitrate is already widely utilized in fertilizer, and is quite inexpensive.

Sep 21, 2021

Nuclear Physicists Hunt for Clues of Color Transparency in Protons

Posted by in categories: particle physics, quantum physics

Protons populate the nucleus of every atom in the universe. Inside the nucleus, they cling tightly to neighboring protons and neutrons. However, it may be possible to knock out protons that are in a smaller size configuration, so that they interact less with nearby particles as they exit the nucleus. This phenomenon is called color transparency. Nuclear physicists hunting for signs of color transparency in protons recently came up empty handed.

The Impact.

The theory that describes the behavior of particles made of quarks is called quantum chromodynamics (QCD). QCD includes many common subatomic particles, such as protons and neutrons. It also predicts the phenomenon of color transparency. Physicists have observed color transparency in simpler, two-quark particles called pions. If physicists can observe or rule out color transparency for protons, a more complicated three-quark system, they would gain important clues regarding the differences between two-and three-quark systems in QCD.