Very massive stars occasionally expel material in colossal eruptions, driven by continuum radiation pressure rather than blast waves. Some of them rival supernovae in total radiative output, and the mass loss is crucial for subsequent evolution. Some are supernova impostors, including SN precursor outbursts, while others are true SN events shrouded by material
Natural and anthropogenic hazards are frequently responsible for disaster events, leading to damaged physical infrastructure, which can result in loss of electrical power for affected locations. Remotely-sensed, nighttime satellite imagery from the Suomi National Polar-orbiting Partnership (Suomi-NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band (DNB) can monitor power outages in disaster-affected areas
We study the impact of photometric signal to noise on the accuracy of derived structural parameters of unresolved star clusters using MCMC model fitting techniques. Star cluster images were simulated as a smooth surface brightness distribution following a King profile convolved with a point spread function. The simulation grid was constructed by varying
Government agencies were most heavily hit by ransomware during the first quarter, says Positive Technologies. Organizations and their employees can fall victim to a variety of cyberattack methods, including phishing campaigns, viruses, spyware, and trojans. But one particularly problematic and pervasive type of attack is ransomware. A report released Wednesday by security provider
Digital media art is a brand-new course combining technology and art under the background of streaming media. Since digital art is based on computer technology, the course is required to keep up with the frontiers of science and technology, and the speed of knowledge update should keep pace with the development of the
This week, engineers attached NASA s Perseverance rover to it s United Launch Alliance booster. It will take the rover days to reach Mars where it will search for signs of life on the Red Planet. Later this month or next, depending on the weather NASA s Perseverance rover will launch for the
Orange has confirmed to BleepingComputer that they suffered a ransomware attack exposing the data of twenty of their enterprise customers. Orange is a French telecommunications company that offers consumer communication services and business services to the enterprise. With million customers and , employees, Orange is the fourth-largest mobile operator in Europe. As part of its services
On Thursday, researchers at online security firm Check Point detailed their latest discovery: an exploit in Zoom which would have allowed any bad actor to use a company’s vanity URL for their own video meeting. Here’s what this means. Basically, companies and organizations paying Zoom for video conferencing services can set up a
Botswana s mystery spate of elephant deaths could be caused by a novel disease , the government fears. Six new elephant carcasses have been discovered in the African country, taking the total since May to in a crisis which has left officials and veterinarians baffled. ities say that poaching is not the cause,
Oggi, per un’azienda che offre servizi e prodotti, avere una buona identità e presenza online è diventato ormai indispensabile. In Italia, secondo il sito Stats Counter – GlobalStats, Google occupa oltre il 96% del market share e ottenere visibilità su questo motore di ricerca, per determinate parole chiave attinenti al proprio business, è