Science, Space, Health & Robotics News - Page 2
A study on the fusion fuel breakthrough titled "First-Principles Density Limit Scaling in Tokamaks Based on Edge Turbulent Transport and Implications for ITER" has been published in the journal Physical Review Letters.
Physicists from the Swiss Federal Institute of Technology Lausanne (Ecole Polytechnique Federale de Lausanne, or EPFL) have updated one of the foundational laws governing nuclear fusion research since 1988, the Greenwald limit, named after Martin Greenwald. They have shown that much more hydrogen fuel can safely be used in fusion reactors.
Nuclear fusion (the process of fusing two atomic nuclei, typically of hydrogen, and releasing large amounts of energy) experiments are conducted within reactors called tokamaks. The tokamak is designed to contain the plasma created from the fusion fuel, in this case, hydrogen atoms, which is heated to about ten times the temperature of the sun's core.
New estimations show that the upcoming Jupiter-3 geostationary communications satellite will be the heaviest commercial geostationary satellite ever launched.
Jupiter-3, also known as Echostar 24, is being built by Maxar Technologies for Hughes Network Systems, a subsidiary of EchoStar. The satellite was scheduled to launch at the end of 2022, after initially being planned to launch mid-way through the year, but delays to several Maxar spacecraft, including Jupiter-3, mean that it is now likely to launch in early 2023.
"This delay is due in part to relocation of critical resources at Maxar to a higher priority government-related spacecraft project," said Pradman Kaul, president of Hughes Networks Systems.
A study on the night-time solar development titled "Thermoradiative Power Conversion from HgCdtTe Photodiodes and Their Current-Voltage Characteristics" has been published in the journal ACS Photonics.
Researchers from the University of New South Wales (UNSW) managed to generate electricity using the energy from heat radiated as infrared light. The device used to generate power is called a thermoradiative diode, a semiconductor device made from materials used in night-vision goggles. Stanford University researchers were able generate electricity with solar panels last month with similar methods.
"Using thermal imaging cameras you can see how much radiation there is at night, but just in the infrared rather than the visible wavelengths. What we have done is make a device that can generate electrical power from the emission of infrared thermal radiation," the researchers wrote.
The end of operations for NASA's InSight (short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) Mars lander is due at the end of this year as it continues to lose power.
InSight on April 24, 2022, the 1,211th Martian day, or sol, of the mission. Credits: NASA/JPL-Caltech
Since landing on Mars on November 26th, 2018, to measure seismic activity, InSight has remained powered by a pair of solar panels, each measuring about 7 feet (2.2 meters) wide. Its primary science mission was to be achieved within a year on Mars (almost two years on Earth) and having completed it, NASA has extended its mission.
Elon Musk has had bouts with the Securities and Exchange Commission (SEC) in the past, and now he may be about to enter into the ring with them again following Musk's acquisition of Twitter.
In 2013 the SEC ruled that Twitter and other social media platforms are viable ways for publicly traded companies to disclose information that can affect share prices. In 2018, Elon Musk tweeted that he had "funding secured" to take Tesla private, which caused Tesla's share price to skyrocket. The SEC went after Musk for his tweets which eventuated in Musk paying a $20 million fine, giving up his position as chairman of Tesla, and having information about Tesla pre-approved by colleagues at the company before publishing.
Now, an investor who has purchased more than 5% of a company's stock is forced to disclose their position within 10 days of the purchase. This SEC rule is put into place so other investors are aware that a potentially large investor has entered the scene and may be looking to gain a significant position or even take over. Musk waited 21 days to disclose his position of approximately 9.6%, which, when revealed, caused the price of Twitter's stock to skyrocket.
As reported yesterday, the US government conducted a public hearing with top military officials on UFOs, or as officials would prefer them to be called "Unidentified Aerial Phenomena (UAP)".
During the hearing, which can be seen in full above, top Pentagon officials spoke to a House panel about UFO encounters and the risk they pose to national security. The hearing comes after a leaked military video of a UFO went viral, which eventuated into a large report on UFOs being released by the US military that stated the US had only tracked 144 encounters with UFOs.
However, there seem to be many more reports since then, as top Pentagon officials said during the hearing that the US military is "approximately 400" on record, a very sharp increase from the 144 recorded between 2004 and 2021. The spike in encounters can be attributed to the reduction in stigma attached to UFO sightings as a result of the 2021 report being released.
The first lunar eclipse of 2022 on the night of May 15th was the longest total lunar eclipse in 33 years.
(Image credit: Martin Bernetti/AFP via Getty Images)
The full moon spent approximately 85 minutes inside the Earth's umbra and shadow, compared to 96 minutes during a total lunar eclipse in August 1989. May's full moon is known as the Flower Moon, while the reddish appearance taken on by the moon during a total lunar eclipse due to light from the Sun bleeding around the Earth and landing on the moon earns it the moniker Blood Moon.
A Super Moon occurs when a full moon or new moon closely coincides with perigee, meaning the point in the moon's orbit at which it is closest to Earth, giving the moon a larger apparent size in the sky than normal. The culmination of these three factors has given this month's spectacular total lunar eclipse the mouthful of a name that is the Super Flower Blood Moon.
The Lockheed Martin X-59 QueSST (Quiet SuperSonic Technology) supersonic jet is being developed for NASA's Low-Boom Flight Demonstrator project.
Lockheed Martin's team at its Skunk Works facility is working with NASA to develop the experimental supersonic aircraft to address a persistent issue with supersonic flights; the sonic boom. A recent video posted to Lockheed Martin's YouTube channel features team members discussing testing and more on the journey to X-59's first flight.
The X-59 recently returned to Skunk Works in Palmdale, California, after critical ground tests over several months in Lockheed Martin's Ft. Worth facilities in Texas. The ground tests were conducted to ensure the aircraft could withstand the stresses of supersonic flight, meaning speeds of at least Mach 1. When exceeding the speed of sound (Mach 1), aircraft typically produce a loud sonic boom. However, the design of the X-59 is intended to reduce that to a quiet sonic "thump."
A study on the gene editing breakthrough titled "CRISPR-Cas9 editing of the arginine-vasopressin V1a receptor produces paradoxical changes in social behavior in Syrian hamsters" has been published in the journal Proceedings of the National Academy of Sciences.
Researchers from Georgia State University used CRISPR-Cas9 genome-editing technology to remove the expression of the Avpr1a receptor in Syrian hamsters. By removing the genes encoding for Avpr1a, the receptor is no longer made, and vasopressin, which normally binds to that receptor, can no longer influence the social behavior it typically regulates, such as pair bonding, cooperation, communication, dominance, and aggression.
Without the receptors, the hamsters showed higher social communication behavior levels than those with intact receptors. Typical differences in aggressiveness between male and female hamsters were also eliminated, with both displaying high levels of aggression towards members of the same sex.
In what feels like something ripped out of the future -- or maybe out of the multiverse -- Israel's Finance Ministry and the Israel Innovation Authority (IIA) announced they will be testing a new project: an artificial intelligence (AI) floating (yes, floating) system that would generate electricity by tracking the sun.
The new AI-powered floating system is the work of a collaboration between Israeli company Xfloat, which made the system, and Mekorot national water company. The AI system will be floating above the reservoir water, tracking the sun and moving around for the absolute optimal results (power from the sun, onto its solar panels).
Xfloat has designed the system based on machine learning capabilities, sucking in that previous data over time, optimizing its performance continuously. Israel's Finance Ministry and the Israel Innovation Authority (IIA) said that the system has a high power generation capacity and can handle environmental changes and extreme weather.