Europe has become the new epicenter of the COVID-19 pandemic as cases in China slow and the deadly coronavirus runs through Italy and nearby countries, World Health Organization officials said Friday. CNBC reports: “More cases are now being reported [in Europe] every day than were reported in China at the height of its epidemic,” WHO Director-General Dr. Tedros Adhanom Ghebreyesus said…
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What is the gegenschein?
The sun’s counterglow – or gegenschein – is kind of a stargazers’ legend. What is it, and how can you see it? Erwin Matys and Karoline Mrazek of Project Nightflight explain. Source: https://earthsky.org/space/definition-what-is-the-gegenschein…
Turbulent convection at the heart of stellar activity
In their interiors, stars are structured in a layered, onion-like fashion. In those with solar-like temperatures, the core is followed by the radiation zone. There, the heat from within is led outwards by means of radiation. As the stellar plasma becomes cooler farther outside, heat transport is dominated by plasma flows: hot plasma from within rises to the surface, cools, and…
March equinox: All you need to know
The 2020 equinox comes March 20 at 03:50 UTC. It’s an event that happens on our sky’s dome and a seasonal marker in Earth’s orbit around the sun! Source: https://earthsky.org/astronomy-essentials/everything-you-need-to-know-vernal-or-spring-equinox…