The picture above of the Sun was taken by Alan Friedman. He captured this image using a 90mm telescope and a filter that only allows a narrow wavelength of light emitted by hydrogen through which tracks the activity of gas on the Sun’s surface.
Note the detached prominence on the top left of the picture. This is material ejected from an erupting sunspot. The mass of material ejected in a prominence can equal 10 billion tons.
To see this article and photo in its original format, check out: http://blogs.discovermagazine.com/badastronomy/2011/03/08/seriously-jaw-dropping-picture-of-the-sun/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+BadAstronomyBlog+(Bad+Astronomy