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Asterisms are familiar patterns of stars that are not constellations. Learn about some well-known asterisms, such as the Big Dipper, the Summer Triangle, and the Winter Circle.
En astronomie, un astérisme est une figure remarquable dessinée par des étoiles particulièrement brillantes 1, 2. En général, ces étoiles ne sont liées ni par une interaction gravitationnelle significative 3, ni par une gestation commune, ce qui fait d'un astérisme un objet céleste plutôt arbitraire et subjectif 4.
Learn what asterisms are, how they differ from constellations, and how to recognize them in the night sky. Explore examples of bright and faint asterisms, their names, shapes, and locations in the sky.
Asterisms range from simple shapes of just a few stars to more complex collections of many stars covering large portions of the sky. The stars themselves may be bright naked-eye objects or fainter, even telescopic, but they are generally all of a similar brightness to each other.
6 janv. 2022 · Asterisms are patterns of stars with shapes and sizes that can range from the very simple, containing just a few stars, to the larger and more complex — with some of these arrangements of stars...
3 mars 2024 · Learn the difference between a constellation and an asterism, and see some famous examples of both. A constellation is an official group of stars with well-defined boundaries, while an asterism is a pattern of stars with a popular name.
An asterism is a pattern of stars that is not a constellation, such as the Big Dipper or the Summer Triangle. Learn about the history, types, and uses of asterisms and constellations from Britannica's editors.
