Here’s how to spot Canopus, the 2nd-brightest star in the sky as seen from Earth, on February evenings. Source: https://earthsky.org/brightest-stars/few-know-the-second-brightest-star-canopus…
Tag: free
AEgIS on track to test freefall of antimatter
It’s a fundamental law of physics that even the most ardent science-phobe can define: matter falls down under gravity. But what about antimatter, which has the same mass but opposite electrical charge and spin? According to Einstein’s general theory of relativity, gravity should treat matter and antimatter identically. Finding even the slightest difference in their free-fall rate would therefore lead to…
Today in science: A spacecraft obliterated a sundog
On February 11, 2010, a solar observatory launched into space ripped apart a sundog and created a new ice halo that amazed scientists. Source: https://earthsky.org/human-world/video-when-a-spacecraft-destroyed-a-sundog…
Coursera partners with Howard University, expands social justice content, and collaborates with Facebook to offer scholarships to Black learners
By Betty Vandenbosch, Chief Content Officer at Coursera At Coursera, we believe that learning is the source of human progress — that it has the power to transform our world. In 2020, we strengthened our commitment to address systemic racism through learning. We focused on creating social justice and anti-racism content and elevating Black voices […]
The post Coursera partners with Howard…
Is this the end of the A-68A iceberg?
Satellite images reveal that the once colossal A-68A iceberg has broken into multiple pieces. Source: https://earthsky.org/earth/end-of-the-a68a-iceberg-feb2021…
Astronomers offer possible explanation for elusive dark-matter-free galaxies
A team led by astronomers at the University of California, Riverside, has found that some dwarf galaxies may today appear to be dark-matter free even though they formed as galaxies dominated by dark matter in the past. Source: https://phys.org/news/2021-02-astronomers-explanation-elusive-dark-matter-free-galaxies.html…
Anniversary of mysterious parade of meteors
On February 9, 1913, lucky observers witnessed the Great Meteor Procession, when bright meteors soared horizontally across the sky in a stately marching rank for minutes at a time. Source: https://earthsky.org/space/this-date-in-science-great-meteor-procession-of-february-9-1913…
Twitter Considers Subscription Fee for Tweetdeck, Unique Content
Twitter is building a subscription product as a way to ease its dependence on advertising — a plan the social network has considered for years, and one that has taken on a heightened priority given the pandemic and pressure from activist investors to accelerate growth. From a report: The majority of Twitter’s revenue comes from targeted advertising, which serves up promoted…
Swiss Company Claims Weakness Found in Post-Quantum Encryption, Touts Its New Encryption Protocol
“A Swiss technology company says it has made a breakthrough by using quantum computers to uncover vulnerabilities in commonly used encryption,” reports Bloomberg: Terra Quantum AG said its discovery “upends the current understanding of what constitutes unbreakable” encryption… Terra Quantum AG has a team of about 80 quantum physicists, cryptographers and mathematicians, who are based in Switzerland, Russia, Finland and the…
How the NSA’s Hubris Left America Vulnerable
A new book promises “the untold story of the cyberweapons market — the most secretive, invisible, government-backed market on earth — and a terrifying first look at a new kind of global warfare.” Its author — a New York Times cybersecurity reporter — shares the book’s story about David Evenden, a former National Security Agency analyst who later worked in Abu…