In 2018, one of the brightest X-ray lights in the sky went dark, and scientists still aren’t sure why. Source: https://www.livescience.com/black-hole-mysteriously-goes-dark.html
Tag: lights
Electric Cars Would Save America Huge Amounts of Energy
An anonymous reader shares an opinion piece from Bloomberg, written by Liam Denning and Elaine He: Electrifying U.S. vehicles wipes out the equivalent of our entire current power demand. The U.S. consumes a lot of energy; last year, about 100 quadrillion BTUs (equivalent to 17 billion barrels of oil; which, we’ll admit, is only marginally less abstract). But only about a…
‘String of lights’ photographed near Charlotte
A peculiar aerial phenomenon has caught the attention of a local social media group in North Carolina. The lights, which appeared recently over the st… Source: https://www.unexplained-mysteries.com/news/343555/string-of-lights-photographed-near-charlotte…
The Highest Resolution Photos Ever Taken of Snowflakes
Photographer and scientist Nathan Myhrvold has developed a camera that captures snowflakes at a microscopic level never seen before. Smithsonian Magazine reports: Myhrvold, who holds a PhD in theoretical mathematics and physics from Princeton University and served as the Chief Technology Officer at Microsoft for 14 years, leaned on his background as a scientist to create the camera. He also tapped…
Tesla Model S Gets a Radically Redesigned Interior and 520-Mile Range
During its fourth-quarter earnings announcement, Tesla unveiled the long-rumored refresh for its Model S sedan. CNET reports: On the outside, the Model S has a new front bumper with slightly different intakes, a tweaked rear diffuser and new 19- and 21-inch wheel designs. All of the exterior trim is now finished in black to match the Model Y, but the paint…
Amazon’s Alexa Can Now Act On Its Own ‘Hunches’
An anonymous reader quotes a report from The Verge: Amazon is enabling a new feature today that allows Alexa to proactively complete tasks around the house, such as turning off lights, based on your habits and frequent requests. Alexa has been able to sense these habits and ask about them since 2018 — the company calls them “hunches” — but before…
SpaceX’s 1st Starlink launch of 2021 is now set for Wednesday
SpaceX intends to launch tens of thousands of Starlink satellites, with lifespans of around 5 years, into low-Earth orbit. The goal is global internet access. Astronomers are concerned. Here’s how to watch Wednesday’s launch. Source: https://earthsky.org/space/spacexs-1st-starlink-launch-of-2021…
The myths behind the southern and northern lights
For millennia, humans have viewed the northern and southern lights – aurora borealis and aurora australis – and created myths and folklore to explain the dancing lights they saw in the sky. Source: https://earthsky.org/human-world/legends-folklore-myths-northern-southern-lights-auroras…
Image: Cosmic neon lights
This image shows a new type of star that has never been seen before in X-ray light. This strange star formed after two white dwarfs—remnants of stars like our sun—collided and merged. But instead of destroying each other in the event, the white dwarfs formed a new object that shines bright in X-ray light. Source: https://phys.org/news/2021-01-image-cosmic-neon.html…
Is a solar flare the same thing as a CME?
Solar Cycle 25 is here, and that means – in the years ahead – more solar flares and more coronal mass ejections, or CMEs. People sometimes use the words interchangeably, but they’re not the same thing. Here’s the difference. Source: https://earthsky.org/space/is-a-solar-flare-the-same-thing-as-a-cme…