hubble_refurb
... The wispy, glowing, magenta structures in this image are the remains of a star 10 to 15 times the mass of the Sun that we would have seen exploding as a supernova 3,000 years ago. The remnant’s fast-moving gas is plowing into the surrounding gas of the galaxy, creating a supersonic shock wave in th ...
... The wispy, glowing, magenta structures in this image are the remains of a star 10 to 15 times the mass of the Sun that we would have seen exploding as a supernova 3,000 years ago. The remnant’s fast-moving gas is plowing into the surrounding gas of the galaxy, creating a supersonic shock wave in th ...
Measuring Stars
... which are called Visual binaries. Many visual binaries have long orbital periods of several centuries or millennia. In many cases a binary system is too far away, or the stars are too close, or one star is so much brighter than the other that we cannot distinguish the two stars visually. But still w ...
... which are called Visual binaries. Many visual binaries have long orbital periods of several centuries or millennia. In many cases a binary system is too far away, or the stars are too close, or one star is so much brighter than the other that we cannot distinguish the two stars visually. But still w ...
Star Formation: Interstellar Gas and Dust
... • Mass is so concentrated that light cannot escape. • One way to think about it: – vescape = 2GM/R becomes greater than speed of light. – So photons can’t escape. • Black holes now known on three size scales: • M ~ a few M (Single star. RSchwarzschild = 9 km) • M ~ 105 M (recently found in 2 globu ...
... • Mass is so concentrated that light cannot escape. • One way to think about it: – vescape = 2GM/R becomes greater than speed of light. – So photons can’t escape. • Black holes now known on three size scales: • M ~ a few M (Single star. RSchwarzschild = 9 km) • M ~ 105 M (recently found in 2 globu ...
AST 301 Introduction to Astronomy - University of Texas Astronomy
... Since distance α 1 / parallax, Spica must be at twice the distance of Canopus. (The numbers are 100 pc and 200 pc, but you don’t need to know that.) The more distant star (Spica) appears fainter. Since it is twice as distant as Canopus, it appears 4 times fainter, or ¼ as bright. We could use the ma ...
... Since distance α 1 / parallax, Spica must be at twice the distance of Canopus. (The numbers are 100 pc and 200 pc, but you don’t need to know that.) The more distant star (Spica) appears fainter. Since it is twice as distant as Canopus, it appears 4 times fainter, or ¼ as bright. We could use the ma ...
An introduction to the HR diagram File
... temperature, its life expectancy and its eventual fate. ...
... temperature, its life expectancy and its eventual fate. ...
The Family of Stars
... A failed star that does not become hot enough to ignite nuclear fusion. The burned-out remnant of a very low-mass star that never ignites Helium fusion. The collapsed Carbon/Oxygen core of a sunlike star. The collapsed iron core of a high-mass star. The collapsed iron core of a sun-like star. ...
... A failed star that does not become hot enough to ignite nuclear fusion. The burned-out remnant of a very low-mass star that never ignites Helium fusion. The collapsed Carbon/Oxygen core of a sunlike star. The collapsed iron core of a high-mass star. The collapsed iron core of a sun-like star. ...
Grand Tour Worksheet - School District of La Crosse
... 1. WHEN WAS THE LAST VISIT FOR HALLEY’S COMET? 2. Comets mat very well be what? 3. Are new comets predictable? 4. How often does Halley’s Comet return? 5. Where does Halley’s spend most of its time? 6. How long has Halley’s been observed? ...
... 1. WHEN WAS THE LAST VISIT FOR HALLEY’S COMET? 2. Comets mat very well be what? 3. Are new comets predictable? 4. How often does Halley’s Comet return? 5. Where does Halley’s spend most of its time? 6. How long has Halley’s been observed? ...
Define the following terms in the space provided
... Stars are much larger than planets. Our Sun is over 100 times the radius of the Earth. There are stars some what smaller than the Sun and stars that are vastly larger than the Sun Star clusters come in two principle forms: open clusters and globular clusters. They may consist of several hundred to s ...
... Stars are much larger than planets. Our Sun is over 100 times the radius of the Earth. There are stars some what smaller than the Sun and stars that are vastly larger than the Sun Star clusters come in two principle forms: open clusters and globular clusters. They may consist of several hundred to s ...
Astronomy 1 – Winter 2011
... Parallax is a tool to measure distances The Inverse-Square Law relates luminosity and brightness Low luminosity stars are more common than more luminous ones Colors and spectral types measure a star’s temperature The Hertzsprung-Russell (H-R) diagram is a graph plotting luminosity vs temperature • ...
... Parallax is a tool to measure distances The Inverse-Square Law relates luminosity and brightness Low luminosity stars are more common than more luminous ones Colors and spectral types measure a star’s temperature The Hertzsprung-Russell (H-R) diagram is a graph plotting luminosity vs temperature • ...
Samenvatting ANW SPU set 3 Chapter 2: The Earth What are
... can use it to find Polaris, which is again part of the Little Dipper. See chapter 2. What is Orion? How can you find Orion? Orion is often referred to as The Hunter, this constellation is located on the celestial equator and visible throughout the world. It includes the belt of Orion; three bright s ...
... can use it to find Polaris, which is again part of the Little Dipper. See chapter 2. What is Orion? How can you find Orion? Orion is often referred to as The Hunter, this constellation is located on the celestial equator and visible throughout the world. It includes the belt of Orion; three bright s ...
Chapter 17
... C. From the "fixed basis" of globular clusters in the galactic halo. D. From the proper motions of nearby open clusters. 16. The reason we can use RR-Lyrae stars to find our distance from the Galaxy's center is: A. of their period-luminosity relation. B. they are all at the same distance. C. they ar ...
... C. From the "fixed basis" of globular clusters in the galactic halo. D. From the proper motions of nearby open clusters. 16. The reason we can use RR-Lyrae stars to find our distance from the Galaxy's center is: A. of their period-luminosity relation. B. they are all at the same distance. C. they ar ...
www.NewYorkScienceTeacher.org/review
... What causes the dark bands observed in a solar spectrum? a. the emission of specific elements b. different chemical elements which absorb light at specific wavelengths c. highly compressed, glowing gas d. warmer gas in front of a source that emits a continuous spectrum The apparent shift in a star’s ...
... What causes the dark bands observed in a solar spectrum? a. the emission of specific elements b. different chemical elements which absorb light at specific wavelengths c. highly compressed, glowing gas d. warmer gas in front of a source that emits a continuous spectrum The apparent shift in a star’s ...
Physics@Brock - Brock University
... Contemplating the stars, their enormous distances from us, their enormous sizes (some are so large that they would swallow up the entire orbit of the Earth!), their complex workings, and their interesting life stories, never fails to elicit a cosmic feeling. The universe is vast, and we are but a sm ...
... Contemplating the stars, their enormous distances from us, their enormous sizes (some are so large that they would swallow up the entire orbit of the Earth!), their complex workings, and their interesting life stories, never fails to elicit a cosmic feeling. The universe is vast, and we are but a sm ...
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.