five points. 1. Suppose we look at a distant quasar. If an inhabitant of the host galaxy of that quasar looked at the Milky Way at the same time we looked at their galaxy‚ what kind of object might they see? Explain. How would the color of light they observe be different than the color of light emitted by the Milky Way? Explain. 2. What is Hubble’s Law and how can it tell us the distance to a galaxy? Hubble’s Law contains a constant (labeled H‚ the slope of a line). How is the value of
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@ A galaxy is a vast‚ gravitationally bound collection of billions of stars Their "friends" include nebulae‚ stellar remnants‚ planets and other smaller particles including the basic elements hydrogen and helium. Galaxies also consist of an important but poorly understood substance called dark matter. It is believed to surround every galaxy and accounts for much of its mass. STELLAR REMNANTS - Stellar Remnant is a collective term used to describe the stars that are left . DARK MATTER - dark
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Is this one galaxy or two? This question came to light in 1950 when astronomer Art Hoag chanced upon this unusual extragalactic object. On the outside is a ring dominated by bright blue stars‚ while near the center lies a ball of much redder stars that are likely much older. Between the two is a gap that appears almost completely dark. How Hoag’s Object formed remains unknown‚ although similar objects have now been identified and collectively labeled as a form of ring galaxy. Genesis hypotheses include
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Introduction to Astronomy This Lecture • What is Astronomy • The Discovery of our Place in the Universe - A brief history • The Scale of the Universe 2 What is Astronomy? • The scientific study of celestial objects – e.g. Planets‚ Stars‚ Galaxies‚ and the Universe as a whole. • It encompasses the study of everything outside the Earth’s atmosphere. • The name comes from the greek words astron ("star") and nomos ("law"). 3 Other “Astro” words • Astrology is the idea that positions
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Matthew Wong. I believe that the iPhone 4s is better than the Samsung Galaxy S II. If you’re new to the “smartphone” world‚ you may not know which smartphone to choose. Is it Apple’s iPhone 4s‚ which seems like a good choice to everybody‚ or Samsung’s Galaxy S II? The Apple ’s iPhone 4S is obviously the right choice because it has an elegant design‚ a razor-sharp resolution‚ and is more portable compared to the Samsung Galaxy S II. First‚ the iPhone 4S has an elegant and stylish design‚ with longer
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Centaurus A or NGC 5128 is a prominent galaxy in the constellation of Centaurus. It was discovered in 1826 by Scottish astronomer James Dunlop from his home in Parramatta‚ in New South Wales‚ Australia. It is one of the closest radio galaxies to Earth‚ which means that its galactic nucleus has been extensively studied by professional astronomers. This particular galaxy is also the fifth brightest in the sky. The galaxy contains a supermassive black hole with a mass that is equivalent to 55 million
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5 What is crowdsourcing? How does the site Galaxy Zoo manage crowdsourcing? Crowdsourcing is the process of obtaining needed services‚ ideas‚ or content by soliciting contributions from a large group of people‚ and especially from an online community‚ rather than from traditional employees or suppliers. While this definition from Merriam Webster is valid‚ a more specific definition is heavily debated. The process of crowdsourcing is often used to subdivide tedious work and has occurred successfully
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E2550 C5010 Champ C3330 A687 Corby S3653 Rs. Rs. Rs. Rs. Rs. 3‚190/3‚199/3‚329/3‚999/3‚999/- 2 5 4 4 3 3 3 A B C D F G C2 Chat S5270 Metro C3752 Primo S5610 Metro S5200 Corby B3210 Star2 S5263 Star3 Duos S5222 Corby Pro B5310 Galaxy Y S5360 Wave Y S5380 C6112 Rs. Rs. Rs. Rs. 4‚477/4‚500/4‚990/4‚530/- Average monthly income of people in this SEC would be between Rs. 20‚000 – 25‚000 p.m. and they would prefer to
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even bigger hit. As a result of that success‚ many other manufacturers are releasing tablets. One of the most widely hyped and widely owned non-iPad tablets is the Samsung Galaxy Tab. After an earlier effort‚ Samsung released the Galaxy Tab 10.1 and is going to release the Galaxy Tab 8.9 soon” (Sam Costello‚ iPad vs. Samsung Galaxy Tab). “According to IDC‚ Apple was the number one tablet vendor in 2013 and took nearly 40% of the market‚ largely due to the smaller and cheaper iPad Mini. Samsung was number
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al.) Chapter 19 Our Galaxy 19.1 Multiple-Choice Questions 1) What is the diameter of the disk of the Milky Way? A) 100 light-years B) 1‚000 light-years C) 10‚000 light-years D) 100‚000 light-years E) 1‚000‚000 light-years Answer: D 2) What is the thickness of the disk of the Milky Way? A) 100 light-years B) 1‚000 light-years C) 10‚000 light-years D) 100‚000 light-years E) 1‚000‚000 light-years Answer: B 3) What kinds of objects lie in the halo of our galaxy? A) open clusters
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