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The North Star
Tail stars
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∙ 15y ago
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What are pointer stars?
Pointer stars are stars which are used to find an area of the sky. For example, you might be looking for a dim galaxy or small star. You can use two bright stars on a map, find those in the sky, and then find the approximate position of what you are trying to look at by using the location and spacing of the more obvious pointer stars.
How do star charts help?
Star Charts were traditionaly used in naval navigation, where the only point of reference you had to the rest of the world were the stars. You could therefore find your position by comparing the stars you see in the skies to the star charts.
What is the definition of a average star?
The point in in a stars evolution during which it maintains a stable nuclear reaction.
What forces are opposing one another throughout the life of a star and how do they influence the various stages in the life cycle of a star?
During stellar evolution, gravity and stars battle with each other thought the entire lifespan of a star. Because gravity is a force that causes two particles to pull toward each other it constantly tries to collapse a star, the gas pressure of the star pushes the star outward and gravity fails in this aspect. The biggest majority of a stars life, gas pressure and gravity cohabitate in such a way that a star does not collapse under gravity or disintegrate due to gas pressure, until the end of the stars existence. When a star dies it is because of the stars mass. Stars all have different mass and because of such, low, medium and large mass stars all have very different life spans. A star that has a low mass will live longer than the other stars and can live a span of a trillion years. The stars that live this long are considered main sequence stars which means they are a continuous and distinctive band of stars that appear on plots of stellar color versus brightness. When the stars age, they begin to cool off and turn into a white dwarf star, then later to a black dwarf star. The Sun is considered a medium mass star and is believed to be able to live over 15 billion years. Medium mass stars, will spend the first 8 to 10 billion years of their lives as main sequence stars. The star needs to be fueled with hydrogen so when a medium sized star runs out of hydrogen, it will begin to burn helium, then they become red giants. As the star becomes unsteady, the outside shell of the star begins to come off and those pieces make their way out into space which makes a planetary nebula. As that medium star disintegrates, it eventually becomes a white dwarf which eventually cools off into a black dwarf. The stars that have the shortest lives are the large mass stars. Stars of this size turn into a hyper giant or a super-giant as they get older because they become so unbalanced that they begin to tear apart or blow up, becoming a supernova. When the large explosion takes place, it will leave a neutron star or a black hole behind as the large mass stars can cause a very large explosion.
What kinds of stars are pulsars a form of?
First [may be partial] is: A Cephid Variable Star. Quasars and other Gamma Ray sources [colliding Neutron Stars, and 'coalescing' Pairs of Black Holes for example] are also closely related.
What star does the pointer star of the big dipper point to?
The two pointer stars point to Polaris, the north star
The pointer stars in the bowl of the Big Dipper point toward?
The Big Dipper is one of the most recognizable groups of stars in the sky. The pointer stars in the bowl of the dipper point toward the North Star.
What does the point on the point star mean?
Perhaps the questioner means the "pointer stars" which are two stars on the Big Dipper which appear to lie on a line connecting them to the North Star.
What is the big dipper position in polaris?
It is the last star at the tip of the handle of the Little Dipper. The Big Dipper's first two bowl stars (often called the pointer stars) point towards Polaris, but Polaris is not in the Big Dipper.
The constellation that contains the pointer stars used to locate Polaris and the North Star is?
Ursa Major is the constellation. The 2 stars in the bowl of the dipper point to Polaris. Polaris IS the North Star.
Which star do the pointer stars point to?
Merak and Dubhe, often referred to as the pointer stars, point to Polaris, which many people know as the North Star.
The constellation in which the Pointer Stars are located?
The question is vague. There are many stars called "pointer" stars. For example, two of the stars in Ursa Major lie along a line that passes very near Polaris. A completely different set of stars in Ursa Major form an arc that passes near Regulus. There are plenty of other such astronomical coincidences.
What star pattern points to polaris?
The Big Dipper, or Ursa Major has two stars (sometimes called the pointer stars) which line up directly with Polaris. Those two stars, at the "lip" edge of the Big Dipper, are Dubhe and Merak. Merak is at the "bottom" of the Big Dipper, and Dubhe is right at the "lip".
What is a pointer star?
Its basically the stars that are at one of the earths axes or stars that point to the main stars at the 2 axes.
The constellation that contains the pointer stars used to locate Polaris the North Star?
Ursa Major/The Great Bear/The Plough/The Big Dipper/The Drinking Gourd.
How can one determine which star is the North Star?
It is the brightest star in the northern part of the sky. It is part of the Little Dipper and the Big Dipper 'points' to it. The north star is on the tip of the 'Little Dippers' handle. The brighter 'Big Dipper' is easier to see in the night sky so that will be used as a reference point. The 'Big Dipper' constellation is composed of seven stars. Three form the handle and four form the spoon/dipper part. After finding the 'Big Dipper', trace an imaginary line from the two stars on the spoon/dipper opposite the handle. Follow the line to the brightest star; that's the North Star.
A star in the big dipper?
The Big Dipper's most useful stars are Dubhe and Merak, the "pointer" stars at the lip of the ladle of the Big Dipper. Follow the line of those two stars up seven times the distance between them to find the North Star, Polaris. Polaris is the star almost exactly aligned with that of the Earth's axis, so does not appear to move around the sky; for this reason, it has been used for thousands of years as a navigational aid by sailors and other travelers.
