The absolute magnitude M, of a star or astronomical object is defined as the apparent magnitude it would have as seen from a distance of 10 parsecs (about 32.6 light years). The absolute magnitude of the Sun is 4.83 in the V band (yellow) and 5.48 in the B band (blue).
1 [NEW!] Sports vocabulary: Words for popular American sports. [ 2 NEW!] Air Travel: Useful words for traveling on airplanes and through airports. 3  The Environment: Vocabulary related to environmental science and climate change.
More formal vocabulary commonly involves longer words or words with origins in Latin and Greek. More informal vocabulary commonly involves shorter words, or words with origins in Anglo-Saxon. Most dictionaries indicate very informal and/or formal words.