Big Dipper

The Big Dipper (Canada, US) or the Plough (UK, Ireland) is a famous group of stars known as an asterism. It is part of the larger constellation called Ursa Major, which looks like a bear. The Big Dipper is made up of seven bright stars. These stars form a shape that looks like a bowl with a handle, or sometimes like a plough.

People all around the world have known this star pattern for thousands of years. It is helpful for finding directions in the night sky. By drawing an imaginary line through two of the stars in the front of the Big Dipper, called Merak and Dubhe, you can find the North Star, also known as Polaris. Polaris helps point toward the tip of the handle of the Little Dipper.

Because the Big Dipper is easy to spot, it has become important for stargazing and celestial navigation. It helps people find their way at night and has been part of many stories and cultures.

Names and places

The constellation of Ursa Major is seen as different things around the world. Some cultures see it as a bear, a plough, a wagon, or a ladle.

In Ireland and the United Kingdom, it is called the Plough. In German, it is the "Great Wagon" or the "Great Bear". In Dutch, it is the "Saucepan". In Italian, it is called the "Great Wagon" or "Orsa Maggiore" ("Greater Bear").

In Chinese astronomy and Chinese constellation records, it is called "Beidou" (Northern Dipper). In Vietnam, it is known as Sao Bánh lái lớn (The Big Rudder Stars). In Malay, it is the "Boat Constellation"; in Indonesian, the "Canoe Stars".

In Inuit astronomy, the stars are called "the Caribou".

The name "Big Dipper" is mostly used in the United States and Canada.

Stars

The Big Dipper has seven bright stars in the constellation Ursa Major. These stars have special names and make a shape like a spoon or a plow. Some of these stars, called the Ursa Major Moving Group, move together in space. Over many years, this will change the shape of the Big Dipper.

Near one star, Mizar, there is another star called Alcor. Together they are called the "Horse and Rider." Seeing both stars with your eyes is a test of good eyesight. Mizar is made of four stars and was one of the first pairs of stars found using a telescope.

Guidepost

The Big Dipper helps you find other stars and things in the night sky. If you draw an imaginary line from the star Merak to Dubhe, you can find Polaris, the North Star. You can also find other stars like Regulus and Arcturus by extending lines from stars in the Big Dipper.

You can use the Big Dipper to find interesting things to look at with telescopes, like the Hubble Deep Field and the galaxies M81 and M82.

Cultural associations

The Big Dipper has been important in many cultures and stories. In the Bible, the "Seven Stars" might refer to these stars. The Arabs saw them as part of a funeral procession. In Hindu astronomy, the stars have special names called the Saptarshi.

The Big Dipper appears on many flags and logos, like the Alaska flag and the Flag of the Community of Madrid in Spain. It also inspired the nickname of the main character in the Disney show "Gravity Falls", Dipper Pines, because of a birthmark on his forehead that looks like the Big Dipper.