Do you like chocolate? How about Milky Ways? Enough with the chocolate talk‚ let’s talk galaxies. There are four different types of known galaxies in the world. Those galaxies are Spiral galaxies‚ Elliptical galaxies‚ Irregular galaxies‚ and Quasars. The reason there are four different types‚ is because they are classified by different characteristics. The Spiral galaxy is one that should be important to us humans‚ because we live in one. Spiral galaxies are thin and structured with four sweeping
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wondrous Milky Way. The foggy band of white light has been proven to be the home of our Solar System. There are so many different aspects that make the Milky Way so amazing. Its structure‚ age‚ surrounding galaxies and clusters‚ mythology‚ and existence of life throughout it make the Milky Way so great. The Milky Way is the immense‚ spiral galaxy which is home of our solar system with around 400 billion other stars and their planets‚ with thousands of nebulae and clusters. The milky way is actually
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Universe 1. What is Earth’s Sun‚ and what is its role in the solar system? 2. What is the Milky Way galaxy and the sun’s position in it? 3. What is the Big Bang‚ and what does it say about the age of the universe? 4. What is meant by the phase “looking out in the universe is looking back in time?” 1. The earth’s sun is a star‚ it generates heat and light through nuclear fusion. 2. The Milky Way galaxy is the constellation that earth belongs to‚ the sun is just another star within it. 3. The
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Measures of Astronomical Distances • Let’s view the Universe in terms of kilometres – The size of the observable universe is roughly 130‚000‚000‚000‚000‚000‚000‚000 km ! - Obviously measuring astronomical distances in km is inconvenient. - We need much BIGGER units of distance: • Some commonly used distance units: 1 ly (light year) = Distance traveled by light in 1 year = 9.46 trillion km 1 AU (astronomical unit) = average distance between the Sun & Earth = 150 million km A unit of distance‚
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Galaxies A Galaxy is a gravitational bound system composed by stars‚ stellar remnants‚ an interstellar medium of gas and dust‚ and a component called dark matter. Galaxies are categorized according to their shape‚ some of them are elliptical galaxy which has an ellipse-shaped light profile‚ spiral galaxies are disked shaped with curvy arms‚ smaller galaxies are referred as irregular galaxies. Galaxies don’t float through space‚ they are together in groups known as clusters‚ some clusters are large
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scientific studies in the fields of planetary science‚ he also managed to popularize astronomy more than any other individual. His charismatic teaching and boundless energy impacted people around the world as he broke down complicated subjects in a way that interested television viewers even as he educated them. STEPHEN HAWKING Stephen Hawking was born in 1942. He has made many significant insights into the field of cosmology. He proposed that‚ as the universe has a beginning
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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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The Origin of the Milky Way - Tintoretto ‘The Origin of the Milky Way’ has a large number of techniques and material samples. Around 1575 Jupiter‚ wishing to immortalise the infant Hercules (whose mother was the mortal Alcmene)‚ held him to the breasts of the sleeping Juno. The milk which spurted upwards formed the Milky Way‚ while some fell downwards giving rise to lilies. Lilies were once presented on the painting but the base of the original canvas has been cut off. Support Oil on canvas
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and convinced astronomers that black holes exist. In particular‚ a technique used by astronomers to locate both stellar and super-massive black holes is to observe the motion of stars in the area around the supposed black hole.[4] Most stars in our galaxy are formed in groups of two or more stars‚ by observing the visible partner of a binary system‚ astronomers can effectively trace a black hole. Astronomers can calculate the mass of a black hole quite simply‚ using Keplar’s laws of motion‚ this is
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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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