To avoid any ambiguity, it is important to make clear from the beginning what the concept of information covers in astronomy and space sciences. Generally speaking, it embraces textual, numerical and pictorial data. The latter could be graphics, pictures or satellite images. Numerical data could be tabulated. Text could include a non-negligible amount of mathematical formulae.
KeywordsElectronic Publishing European Southern Observatory Pictorial Data Intrinsic Usefulness Animated Graphic
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