A Question and Answer Guide to Astronomy by Pierre-Yves Bely

By Pierre-Yves Bely

Amazon has performed a disservice to these folks that received this ebook to determine the colourful illustrations within the iPad and iPhone. All colour has been stripped.
Many figures depend upon colour differentiation to explain and clarify the content material. the colour must have been retained, because now the kindle books might be learn on many units, together with desktops, that supply colour. another way, the e-book description in amazon should still supply a disclaimer.
I do have one other kindle booklet that i will learn in colour at the mobilephone, computer and iPad, so it isn't a rule that each one kindle books are intrinsically black and white.

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Extra resources for A Question and Answer Guide to Astronomy

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It has a pinkish color, hence its name (chromos means color in Greek). The structure of the chromosphere is dominated by spicules, highly dynamic jets of gas about 500 km in diameter and reaching 10 000 km in height. In the chroA 1991 total solar eclipse showing the chromosphere mosphere, the temperature goes through (in pink) and the corona (silver white). Credit: a reversal, increasing with altitude from L. Viatour GFDL/CC. 4300 to 8300 K. This surprising temperature inversion is caused by the increased role of magnetic fields in transporting energy outward through the diffuse material.

Double stars are stellar bodies that appear to form a pair in space. But there are doubles and doubles . . Some of these pairs are false doubles, not actually adjacent to each other, just located in the same direction in the sky as seen from Earth. True (or intrinsic) double stars are also called binary stars, and these are physically associated. They orbit around each other, drawn together by the force of gravity, and, in most cases, they even formed together. We do not know precisely the proportion of binary stars in the sky, but it may be as high as two out of every three stars, and triple, quadruple, and even quintuple star systems also exist.

9 billion years, the Sun’s central hydrogen reserve will be exhausted and our star will rapidly enter into a new phase that will trigger the burning of its central helium, inflating it into a red giant (Q. 15). 7 billion years after that, with its helium exhausted and being unable to burn other elements, it will eject most of its envelope as a planetary nebula (Q. 157). The Sun will thus finish its life as a white dwarf (Q. 15). Birth Red giant Now Progressive increase in temperature Planetary nebula White dwarf Billion years Evolution of the Sun (sizes are not to scale).

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