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  2. Stellar corona - Wikipedia

    en.wikipedia.org/wiki/Stellar_corona

    The magnetic flux pushes the hotter photosphere aside, exposing the cooler plasma below, thus creating the relatively dark sun spots. High-resolution X-ray images of the Sun's corona photographed by Skylab in 1973, by Yohkoh in 1991–2001, and by subsequent space-based instruments revealed the structure of the corona to be quite varied and ...

  3. How long does COVID live on surfaces? Experts answer your ...

    www.aol.com/news/long-does-covid-live-surfaces...

    The live virus cannot survive on surfaces for long, because “the virus needs a host to actually be effective,” Dahdal explains. “It needs to be in the human body to multiply and spread.”

  4. High Resolution Coronal Imager - Wikipedia

    en.wikipedia.org/wiki/High_Resolution_Coronal_Imager

    The High Resolution Coronal Imager (Hi-C) is a sub-orbital telescope designed to take high-resolution images of the Sun's corona. As of 2020 [update] it has been launched three times, but only the first and the third launches, on July 11, 2012, and May 29, 2018, resulted in a successful mission. [ 1 ]

  5. Solar Orbiter captures the highest-resolution images of the ...

    www.aol.com/news/solar-orbiter-captures-highest...

    The images, taken on March 22, 2023, and released Wednesday, showcase different dynamic aspects of the sun, including the movements of its magnetic field and the glow of the ultrahot solar corona ...

  6. Sun - Wikipedia

    en.wikipedia.org/wiki/Sun

    The Sun is the star at the center of the Solar System.It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light and infrared radiation with 10% at ultraviolet energies.

  7. How long does COVID last? Here’s when experts say you'll ...

    www.aol.com/long-does-covid-last-experts...

    How the body responds to COVID-19 will vary from one person to the next, and the same goes for the recovery period from the virus.. How long it’ll take to recover from COVID-19 is always going ...

  8. History of coronavirus - Wikipedia

    en.wikipedia.org/wiki/History_of_coronavirus

    The species was merged with Rat coronavirus (discovered in 1970 [23]) and Puffinosis coronavirus (discovered in 1982 [59]) as Murine coronavirus in 2009. [60] 229E and OC43 were collectively named Human respiratory virus but merged as Human coronavirus 229E (HCoV-229E) in 2009. [61]

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