The Universe and Our Galaxies The Universe and Our Galaxies Examples of Elliptical (Messier 87 ) and Spiral Galaxies (NGC 3559) Examples of Elliptical (Messier 87 ) and Spiral Galaxies (NGC 3559) Edwin Hubble was one of the first people to actually realise what a galaxy is‚ the measurement of the “Hubble Tuning Fork” Classification scheme shows how round or rightly wound their “arms” are. E0 means that an elliptical galaxy is extremely round‚ whilst E7 is flat. However not all galaxies
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most of us think of eight planets orbiting around the sun. However‚ the solar system is a lot more complicated‚ larger and exciting than this simple description. The solar system is a gravitationally bound system with all the objects in this system revolving around the sun. The eight planets revolving around the sun are: Mercury‚ Venus‚ Earth‚ Mars‚ Jupitar‚ Saturn‚ Neputune‚ Uranus and Pluto. However‚ the solar system also consists of moons‚ asteroids‚ comets‚ minor planets‚ dust and gas. The sun makes
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PLANETOLOGY Planetology is the branch of astronomy that deals with the physical features of the planets. Planetology studies include the origin and composition of the planets‚ and the solid bodies of comets and meteors found in the solar system. Comet‚ Asteroid‚ and Meteor An asteroid and a comet are very similar‚ and yet at times they are unique and easily distinguishable from each other. An asteroid and a comet are both a small solar body system‚ rotating around the sun. An asteroid consists
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Pluto has recently been reclassified as a dwarf planet rather than a planet. How is a dwarf planet defined‚ and what led to this reclassification? (150 words‚ 3 marks) The International Astronomical Union (IAU) defines a Planet as a celestial body: 1) that orbits the sun 2) is large enough to have formed its round shape due to the force of its own gravity 3) dominates its neighbourhood IAU defines a dwarf planet as a celestial body that is neither a planet nor a satellite. It must: 1) be in direct
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is in the Sun. Of the many objects that orbit the Sun‚ most of the mass is contained within eight relatively solitary planets whose orbits are almost circular and lie within a nearly flat disc called the ecliptic plane. The four smaller inner planets‚ Mercury‚ Venus‚ Earth and Mars‚ also called the terrestrial planets‚ are primarily composed of rock and metal. The four outer planets‚ the gas giants‚ are substantially more massive than the terrestrials. The two
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the everyman‚ but to the astrologists studying it the dwarf planet has proven itself to be a wealth of knowledge which even sometimes contradicted what they previously believed. It’s geological processes are fascinating‚ exhibiting behaviour never thought possible. Even after eighty-six years‚ there is still much this tiny Kuiper Belt object can teach us.
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energy electromagnetic waves and they move out into space. They make contact with the surface and when moved into space by lower energy visible‚ infrared light‚ and ultraviolet light‚ (Villanueva‚ 2010). This is what exactly what defines lightens our planet today. Later when the hydrogen gets absorbed into helium‚ there is no more energy which will empower it to push out and block the Sun from being diminish. In the end the Sun would
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Planet Distance from sun (in km) Distance in scientific notation Mercury 57‚909‚000 5.7909*10^7 Venus 108‚200‚000 1.082*10^8 Earth 149‚600‚000 1.496*10^8 Mars 227‚940‚000 2.2794*10^8 Jupiter 778‚400‚000 7.784*10^8 Saturn 1‚423‚600‚000 1.4236*10^9 Uranus 2‚867‚000‚000 2.867*10^9 Neptune 4‚488‚400‚000 4.4884*10^9 (dont
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Welcome to SCIE 150: The Science of Everything Today: Astronomy Today • Stars: how are they born‚ how do they live‚ how do they die ▫ How do different stars vary in these paths • Planets: how are they born ▫ What are the planets of our solar system like • Constellations are A. Stars that are nearby each other in space B. Stars that appear to be near each other‚ but may be very far apart The Sun • Our Sun is A. B. C. D. An average star A very small star A
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NASA has identified many planets outside our solar system. According to the article “Out of this world‚” the organization has discovered over twelve hundred thousand exoplanets throughout the Milky Way Galaxy. The TedX video “Are we Alone” explained that there are millions of planets in our universe. Astronomers discovered these planets by measuring the brightness of distant stars over time. Moreover they measured the brightness using advanced telescopes such as the Kepler. If the brightness fluctuates
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