After SpaceX’s eighth Starlink internet satellite launch, the company released a video of its Falcon 9 rocket jettisoning two $3 million fairings.
Applications are now open for the nanodegree program, which will help Udacity train developers on the Microsoft Azure cloud infrastructure.
Black holes are the dark remnants of collapsed stars, regions of space cut off from the rest of the universe. If something falls into a black hole, it can never come back out. Not even light can escape, meaning black holes are invisible even with powerful telescopes. Yet physicists know black holes exist because they’re consistent with time-tested theories, and because astronomers have observed how matter behaves just outside a black hole.
Naturally, science fiction loves such an enigmatic entity. Black holes have played starring roles in popular books, movies and television shows, from “Star Trek” and “Doctor Who” to the 2014 blockbuster “Interstellar.”
But black holes aren’t quite as menacing as they are commonly portrayed. “They definitely do not suck,” says Daryl Haggard, an astrophysicist at McGill University in Montreal. “A black hole just sits there, passively. Things can fall onto it, just as meteors can fall to Earth, but it doesn’t pull stuff in.”
She cooked up Italian food to protect her noodle!
A 60-year-old woman from the country’s Marche region prepared dozens of delicious stuffed olives while undergoing brain surgery — to reduce the risk of damaging the vital organ, according to a report Wednesday.
As doctors removed a brain tumor from her left temporal lobe, the unnamed patient whipped up 90 of the breaded-and-fried olives in a makeshift kitchen inside the operating room, according to the BBC.
The promise of clean, green nuclear fusion has been touted for decades, but the rise of AI means the challenges could finally be overcome.
Researchers at Linköping University, Sweden, are attempting to convert carbon dioxide, a greenhouse gas, to fuel using energy from sunlight. Recent results have shown that it is possible to use their technique to selectively produce methane, carbon monoxide or formic acid from carbon dioxide and water.
The study has been published in ACS Nano (“Atomic-Scale Tuning of Graphene/Cubic SiC Schottky Junction for Stable Low-Bias Photoelectrochemical Solar-to-Fuel Conversion”).
Plants convert carbon dioxide and water to oxygen and high-energy sugars, which they use as “fuel” to grow. They obtain their energy from sunlight. Jianwu Sun and his colleagues at Linköping University are attempting to imitate this reaction, known as photosynthesis, used by plants to capture carbon dioxide from air and convert it to chemical fuels, such as methane, ethanol and methanol. The method is currently at a research stage, and the long-term objective of the scientists is to convert solar energy to fuel efficiently.
NASA Administrator Jim Bridenstine tells me that despite the pandemic, the agency will do its utmost to meet the 2024 Artemis lunar return deadline.
“We continue to assess the impact the COVID-19 pandemic has had on our missions, but we strongly believe that we can still meet the goal of landing the first woman and the next man on the Moon in 2024,” NASA Administrator Jim Bridenstine told me via a headquarters’ spokesperson.
Yet NASA has also experienced shakeups in its human spaceflight directorate that could hinder meeting Artemis’ goals. Case in point, Doug Laverro, Associate Administrator of NASA’s Human Exploration and Operations Mission Directorate, departed less than a month ago.
Continue reading “What A Trump Loss In November Would Mean For NASA’s Lunar Return” »
Nootropics and smart drugs are natural or synthetic substances that can be taken to improve mental performance in healthy people.
They have gained popularity in today’s highly competitive society and are most often used to boost memory, focus, creativity, intelligence and motivation.
Here’s a look at the 14 best and how they enhance performance.
The Homeland Security’s cybersecurity advisory division is cautioning Windows 10 users of the possibility of a wave of cyberattacks due to the recent publication of an exploit code.
“Malicious cyber actors are targeting unpatched systems with the new [threat],” the agency noted on the Homeland Security web site. The agency said it “strongly recommends using a firewall to block server message block ports from the internet and to apply patches to critical- and high-severity vulnerabilities as soon as possible.”
The agency also referred concerned parties to Microsoft’s security guidance posts and notes published by the U.S. Computer Emergency Readiness Team at us-cert.gov.
