What is a Star?
... • The color of stars tells us what elements are in them, such as hydrogen or helium. • Each element gives off a different color, allowing scientists to know what a star is made of based on its ...
... • The color of stars tells us what elements are in them, such as hydrogen or helium. • Each element gives off a different color, allowing scientists to know what a star is made of based on its ...
Extreme Tidal Waves in Binary Star Systems
... compact binary systems. The first is through the force of friction created as the stars are stretched back and forth, as described above. The second way that tides can affect stars is by exciting large scale waves that move within the stars. These waves are periodic global deformations of the star, ...
... compact binary systems. The first is through the force of friction created as the stars are stretched back and forth, as described above. The second way that tides can affect stars is by exciting large scale waves that move within the stars. These waves are periodic global deformations of the star, ...
Sky Diary - Society for Popular Astronomy
... on 15 October. This means that both planets are visible during nearly all of the available darkness on any night in the period, with Neptune up first and Uranus following on. Neptune will be a telescopic object, little more than 2 seconds of arc in apparent size, shining at a faint +7.8 magnitude ag ...
... on 15 October. This means that both planets are visible during nearly all of the available darkness on any night in the period, with Neptune up first and Uranus following on. Neptune will be a telescopic object, little more than 2 seconds of arc in apparent size, shining at a faint +7.8 magnitude ag ...
Lecture (Powerpoint)
... the mass of the Sun, or ~80 Jupiter masses) never ``turn on'' Central temperatures never get hot enough for nuclear burning to begin in earnest Nuclear burning is what powers the star through its life Star sits around as a brown dwarf – too big and hot to be a planet, too small and cold to be a real ...
... the mass of the Sun, or ~80 Jupiter masses) never ``turn on'' Central temperatures never get hot enough for nuclear burning to begin in earnest Nuclear burning is what powers the star through its life Star sits around as a brown dwarf – too big and hot to be a planet, too small and cold to be a real ...
Spectral Classification and the HR Diagram
... Danish astronomer Ejnar Hertzsprung and American astronomer Henry Norris Russell discovered that when they compared the luminosity with the type of light that was observed from stars, there were many patterns that emerged. In 1905, Hertzsprung presented tables of luminosities and star colors, noting ...
... Danish astronomer Ejnar Hertzsprung and American astronomer Henry Norris Russell discovered that when they compared the luminosity with the type of light that was observed from stars, there were many patterns that emerged. In 1905, Hertzsprung presented tables of luminosities and star colors, noting ...
The Life Cycle of a Star
... would weigh 5 tons!) A white dwarf is about 8,000 miles in diameter. After 35,000 years, the core begins to cool. ...
... would weigh 5 tons!) A white dwarf is about 8,000 miles in diameter. After 35,000 years, the core begins to cool. ...
Hubble Space Telescope Image
... The “Discovery” of Galaxies At the beginning of the 20th century, what we now call spiral galaxies were referred to as “spiral nebulae” and most astronomers believed them to be clouds of gas and stars associated with our own Milky Way. The breakthrough came in 1924 when Edwin Hubble was able to mea ...
... The “Discovery” of Galaxies At the beginning of the 20th century, what we now call spiral galaxies were referred to as “spiral nebulae” and most astronomers believed them to be clouds of gas and stars associated with our own Milky Way. The breakthrough came in 1924 when Edwin Hubble was able to mea ...
ABOUT PARALLAX AND… CONSTELLATIONS Abstract
... Here is a 20 years old text about a very well known constellation. Using the parallax data extracted from the Hipparcos catalogue, you will verify its present validity… Ursa Major (Figure 7) α UMa, called Dubhe, is situated at some 105 light years (ly) from us. β is called Merak, but the ancient Gre ...
... Here is a 20 years old text about a very well known constellation. Using the parallax data extracted from the Hipparcos catalogue, you will verify its present validity… Ursa Major (Figure 7) α UMa, called Dubhe, is situated at some 105 light years (ly) from us. β is called Merak, but the ancient Gre ...
No Slide Title
... • We learn about stars by studying energy. – Stars produce a full range of electromagnetic radiation, from high-energy X-rays to low-energy radio waves. – Scientists use optical telescopes to study visible light and radio telescopes to study radio waves emitted from astronomical objects. – Earth’s a ...
... • We learn about stars by studying energy. – Stars produce a full range of electromagnetic radiation, from high-energy X-rays to low-energy radio waves. – Scientists use optical telescopes to study visible light and radio telescopes to study radio waves emitted from astronomical objects. – Earth’s a ...
Boy Scout Astronomy Merit Badge Workbook
... 10. List at least three different career opportunities in astronomy. Pick the one in which you are most interested and explain how to prepare for such a career. Discuss with your counselor what courses might be useful for such a career. ...
... 10. List at least three different career opportunities in astronomy. Pick the one in which you are most interested and explain how to prepare for such a career. Discuss with your counselor what courses might be useful for such a career. ...
Neil F. Comins - Kuwait Life Sciences Company
... PREFACE away. View 2,500,000 stars along with more than 170 deep-space objects such as galaxies, star clusters, and nebulae. Travel 15,000 years in time, check out the view from the International Space Station, and see planets up close from any one of their moons. Included are stunning OpenGL graph ...
... PREFACE away. View 2,500,000 stars along with more than 170 deep-space objects such as galaxies, star clusters, and nebulae. Travel 15,000 years in time, check out the view from the International Space Station, and see planets up close from any one of their moons. Included are stunning OpenGL graph ...
Stars - Red, Blue, Old, New pt.4
... • Lose a lot of mass as they evolve off the main sequence. More mass=more mass loss. • But they still can’t squeeze into that 1.44 solar mass limit to become a white dwarf as they approach the end of their ...
... • Lose a lot of mass as they evolve off the main sequence. More mass=more mass loss. • But they still can’t squeeze into that 1.44 solar mass limit to become a white dwarf as they approach the end of their ...
MS Word version
... Question 4: In which of the 3 declination ranges (circumpolar, rise and set, or never rise) are stars A, star B, and star C found? Star A: Star B: Star C: Let’s explore the boundaries of these 3 regions. Make sure you are still at a latitude of 40º N, create a star, select the long trails option fo ...
... Question 4: In which of the 3 declination ranges (circumpolar, rise and set, or never rise) are stars A, star B, and star C found? Star A: Star B: Star C: Let’s explore the boundaries of these 3 regions. Make sure you are still at a latitude of 40º N, create a star, select the long trails option fo ...
The Ever Expanding Universe: Part II
... By the 19th century good working absolute distances to the Planets had been made by astronomers from all around the world using the parallax method. Much of the inspiration to make these measurements came from Edmond Halley, England’s 18th century Royal Astronomer, who urged the next generation of a ...
... By the 19th century good working absolute distances to the Planets had been made by astronomers from all around the world using the parallax method. Much of the inspiration to make these measurements came from Edmond Halley, England’s 18th century Royal Astronomer, who urged the next generation of a ...
November - LVAstronomy.com
... Fred Rayworth: LVAS Vice President and AL Coordinator from Nevada The first time I observed NGC-7789 was on October 2, 1997 at the Okie-Tex star party at Lake Murray, Oklahoma. At an altitude of 872 feet, it was warm, dry (37% humidity according to Jason Ware) and a slight breeze. Using my home-bui ...
... Fred Rayworth: LVAS Vice President and AL Coordinator from Nevada The first time I observed NGC-7789 was on October 2, 1997 at the Okie-Tex star party at Lake Murray, Oklahoma. At an altitude of 872 feet, it was warm, dry (37% humidity according to Jason Ware) and a slight breeze. Using my home-bui ...
File
... such high temperatures that nuclear fusion begins again. This time, carbon atoms in the core fuse into heavier elements until the core is almost entirely made of iron. • When nuclear fusion stops, the star’s core begins to collapse under its own gravity. This causes the outer layers to explode outwa ...
... such high temperatures that nuclear fusion begins again. This time, carbon atoms in the core fuse into heavier elements until the core is almost entirely made of iron. • When nuclear fusion stops, the star’s core begins to collapse under its own gravity. This causes the outer layers to explode outwa ...
Multiple Choice, continued
... such high temperatures that nuclear fusion begins again. This time, carbon atoms in the core fuse into heavier elements until the core is almost entirely made of iron. • When nuclear fusion stops, the star’s core begins to collapse under its own gravity. This causes the outer layers to explode outwa ...
... such high temperatures that nuclear fusion begins again. This time, carbon atoms in the core fuse into heavier elements until the core is almost entirely made of iron. • When nuclear fusion stops, the star’s core begins to collapse under its own gravity. This causes the outer layers to explode outwa ...
Astronomy Homework - Life
... 18. Low mass stars (can/cannot) fuse carbon in their cores because they (do/do not) have enough mass to allow temperatures high enough for carbon fusion. 19. The temperature at which carbon will fuse is (100,000,000°°K/600,000,000°°K). 20. The carbon core of a star becomes degenerate which means (i ...
... 18. Low mass stars (can/cannot) fuse carbon in their cores because they (do/do not) have enough mass to allow temperatures high enough for carbon fusion. 19. The temperature at which carbon will fuse is (100,000,000°°K/600,000,000°°K). 20. The carbon core of a star becomes degenerate which means (i ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.