Credit Card Payment Systems Crashed Friday at Stores and Restaurants Across America

On Friday credit-card payment systems went down for major businesses scattered across the U.S. Business Insider reports:
Fiserv, one of the leading payments providers in the US, told Insider, “A widespread internet service provider outage has impacted multiple businesses today.” Ann Cave, a company spokesperson, added in an email: “Some Fiserv services that rely on internet connectivity were interrupted. The majority have…

What is a quasar?

A quasar is an extremely bright and distant point-like source visible to radio telescopes. The source is a so-called Active Galactic Nucleus, fueled by a supermassive black hole. Source: https://earthsky.org/astronomy-essentials/definition-what-is-a-quasar…

US Drops Digital Tax Demand, Opening Door To Global Deal

The U.S. has dropped a key demand in negotiations over digital taxation of technology companies such as Alphabet’s Google and Facebook, lifting a barrier that had raised transatlantic trade tensions and prevented an international deal. From a report: Treasury Secretary Janet Yellen told her counterparts at a virtual meeting of Group of 20 finance officials that the U.S. is no longer…

Watch ISS spacewalk February 28

On Sunday, February 28, 3 astronauts will perform the first in a pair of International Space Station spacewalks to ready the station for solar array upgrades. How to watch live. Source: https://earthsky.org/space/watch-iss-spacewalk-feb-mar-2021…

Scientists develop laser system that generates random numbers at ultrafast speeds

An international team of scientists has developed a system that can generate random numbers over a hundred times faster than current technologies, paving the way towards faster, cheaper, and more secure data encryption in today’s digitally connected world. …

Merging boson stars could explain massive black hole collision and prove existence of dark matter

An international team of scientists led by the Galician Institute of High Energy Physics (IGFAE) and the University of Aveiro shows that the heaviest black hole collision ever observed, produced by the gravitational-wave GW190521, might actually be something even more mysterious: the merger of two boson stars. This would be the first evidence of the existence of these hypothetical objects, which…

Nearby black hole Cyg X-1 more massive than thought

New research suggests that the famous black hole Cygnus X-1 – first black hole ever detected and one of the closest to Earth – is farther away and much more massive than previously believed. Source: https://earthsky.org/space/cygnus-x-1-black-hole-more-massive-farther…

Big data to model the evolution of the cosmic web

The Instituto de Astrofísica de Canarias (IAC) has led an international team which has developed an algorithm called COSMIC BIRTH to analyze large scale cosmic structures. This new computation method will permit the analysis of the evolution of the structure of dark matter from the early universe until the formation of present day galaxies. This work was recently published in the…

New storage medium uses physical properties of antiferromagnetic material

Using nanoscale quantum sensors, an international research team has succeeded in exploring certain previously uncharted physical properties of an antiferromagnetic material. Based on their results, the researchers developed a concept for a new storage medium published in the journal Nature Physics. The project was coordinated by researchers from the Department of Physics and the Swiss Nanoscience Institute at the University of…