Tag Archives: Pleiades

The Sonnet

The Sonnet

A sonnet is a poem with 14 lines, invented in 13th-century Italy and perfected by Petrarch. The Italian sonnet is divided into an octave and a sestet. The octave states a problem, and the sestet gives its resolution, with a clear break between the two sections. When the sonnet reached England in the 16th century—chiefly through translations of Petrarch’s works—poets changed its meter, rhyme scheme, and line grouping, creating the Elizabethan sonnet. What is the origin of the term “sonnet”? More… Discuss


Messier Objects

In 1784, French astronomer Charles Messier compiled a list of non-stellar celestial objects. He had no understanding of what these items—now known to be galaxies, nebulae, and star clusters—actually were; he just wanted to further the search for comets by listing the indistinct objects that might be mistaken for them. Designations from his catalog are still used to refer to some nebulae and star clusters—for instance, M1 is the Crab Nebula and M45 is the Pleiades. What is a “Messier Marathon“? More… Discuss


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