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…

Galaxies have magnetic fields, too! Images here

Until recently, magnetic fields in the outskirts of galaxies were too faint to be detected. Although it’s still not clear what causes them or how they’re maintained, astronomers have started to create images of their observations of galaxies’ magnetic fields producing beautiful aurora-like effects. See them here. Source: https://earthsky.org/space/images-of-magnetic-fields-in-galaxies…

To the Moon? Dogecoin Leaps 46% in 24 Hours After Tweets From Elon Musk, Snoop Dogg

Friday the 71-year-old former lead singer of the band Kiss tweeted “I bought Dogecoin…six figures,” to his 922,000 followers, along with other supportive tweets. Saturday rap artist Snoop Dogg tweeted an image of “Snoop Doge” to his 19.2 million followers. Later Elon Musk tweeted a picture from the Lion King with Musk’s head appearing on a monkey holding up a monkey…

Covid-19 successes: How schools and sports leagues tamed the virus

From social bubbles to sewage testing, these are the techniques that have helped business, universities and sports leagues to keep covid-19 at bay Source: https://www.newscientist.com/article/2262845-covid-19-successes-how-schools-and-sports-leagues-tamed-the-virus/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…

eROSITA finds large-scale bubbles in the halo of the Milky Way

Gigantic hot gas structures above and below the galactic disc are probably due to shock waves generated by past energetic activity in the center of our galaxy. Source: https://phys.org/news/2020-12-erosita-large-scale-halo-milky.html…

The Milky Way’s black hole burped out two colossal X-ray bubbles

Astronomers have found a pair of enormous bubbles of X-rays, above and below the Milky Way, which were probably created by our galaxy’s supermassive black hole Source: https://www.newscientist.com/article/2262113-the-milky-ways-black-hole-burped-out-two-colossal-x-ray-bubbles/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…

Covid-19 Christmas: How is Europe planning to tackle the holidays?

Italy is banning travel, the UK has household bubbles, Germans are isolating and Austria is mass testing. Which approach to coronavirus at Christmas is likely to work best? Source: https://www.newscientist.com/article/mg24833125-000-covid-19-christmas-how-is-europe-planning-to-tackle-the-holidays/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home…