what is larger au or light year
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When is a day longer than a year? A light year is much bigger, an AU is only about 8 light minutes. 1 light year = 63,240 AU
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- One AU is 148,597,871 km, so 0.7 AU is 104,718,510 km. The velocity  of light and other electromagnetic radiations in free space is  299,792.458 km/second, so the time for t…he round trip is (2 *  104,718,510 / 299,792.458) seconds - or 698.6 seconds (11 minutes,  38.6 seconds.) 1 person found this useful.
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1 light year is equal to how many years of the Earth? A light-year (abbreviation: ly), sometimes written light year, is a unit of length used informally to express astronomical distances. It is approximately 9 trillion kilometres (or about 6 trillion miles).
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Astronomical system of units The astronomical unit of length is that length for which the Gaussian gravitational constant (k) takes the value 6998172020989500000♠0.01720209895 when the units of measurement are the astronomical units of length, mass and time. The dimensions of k 2 are those of the constant of gravitation (G), i.e., L 3 M −1 T −2. The term “unit distance” is also used for the length A while, in general usage, it is usually referred to simply as the “astronomical unit”, symbol au, AU or ua.
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Can you spot EARTH in this stunning image? If you think you can, prepare to be ASTONISHED Each big object in space is part of a much larger structure - the large-scale structure of the visible universe. We only see a minuscule piece of the universe. Big is bigger than we can ever imagine. VY Canis Majoris is the biggest type of star known as a red hyper giant. It is 4,892 light years from Earth and has a circumference of 5.46billion miles - around 2,000 times that of our sun. It would take a passenger jet 1,100 years to fly round it once.
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Light-year A light-year, also light year or lightyear (symbol: ly) is a unit of length, equal to just under 10 trillion kilometers (10×10 15 meters, 10 petameters or about 6 trillion miles).As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year.The light-year is often used to measure distances to stars and other distances on a galactic scale, especially in non-specialist and popular science publications.The preferred unit in astrometry is the parsec, because it can be more easily derived from, and compared with, observational data. light-year, also light year or lightyear (symbol: ly) is a unit of length, equal to just under 10 trillion kilometers (10×10 15 meters, 10 petameters or about 6 trillion miles).
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StarChild Question of the Month for March 2000 The AU, however, is not big enough of a unit when we start talking about distances to objects outside our solar system. For distances to other parts of the Milky Way Galaxy (or even further), astronomers use units of the light-year or the parsec . The light-year we have already defined. The parsec is equal to 3.3 light-years.
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General Astronomy/Print version The Milky Way Galaxy is about 100,000 Light Years across. Each light year is about 63,241 Astronomical Units. An Astronomical unit is the average distance between the Sun and … the Earth, or about 93 million miles. Based on that math we form an equation.100,000x63,241=6,324,100,000 Astronomical units Thats exactly 5.881413 × 1017 or 588,141,200,000,000,000 miles.he Milky Way Galaxy is about 100,000 Light Years across. Each light year is about 63,241 Astronomical Units. An Astronomical unit is the average distance between the Sun and … the Earth, or about 93 million miles. Based on that math we form an equation.
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THE NATURES OF THE STARS That assignment is given to the parsec. 1 parsec is approximately equal to 3.26 light years. Another commonly used unit of distance is the astronomical unit or AU, wherein 1 AU is the average distance between the Earth and the Sun, and is roughly equivalent to 150,000,000 km.
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Earth-Sun Distance Measurement Redefined Under the new definition, the astronomical unit (or AU) — the measurement used for the Earth-sun distance — is no longer always in flux, depending on the length of a day and other changing factors.
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How far is each planet from Earth?  (Intermediate) Since the distances are so large, we usually express them in Astronomical Units (AU). (An AU is the distance from Earth to the Sun, about 150 million kilometers or 93 million miles). The table below lists the distance of each planet from the Sun in AU. To find the distance between the orbits of two planets in AU, subtract the two planet-Sun distances.
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How far is each planet from Earth?  (Intermediate) Since the distances are so large, we usually express them in Astronomical Units (AU). (An AU is the average distance from Earth to the Sun, about 150 million kilometers or 93 million miles.) The table below lists the distance of each planet from the Sun in AU. (Numbers were taken from this page.)
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Ask Us He did this by relating the light-year to the astronomical unit – the Earth-sun distance. One astronomical unit equals about 150 million kilometers (93 million miles). Another way of looking at it: the astronomical unit is a bit more than 8 light-minutes in distance. Quite by coincidence, the number of astronomical units in one light-year and the number of inches in one mile are virtually the same.
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- The astronomical unit (symbol au, AU or ua) is a unit of length, roughly the distance from the Earth to the Sun.his is because the distance between the Earth and the Sun is not fixed (it varies between 6999983289891200000♠0.9832898912 and 7011152097701010286♠1.0167103335 AU) and, when the Earth is closer to the Sun (perihelion), the Sun's gravitational field is stronger and the Earth is moving faster along its orbital path.
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Alpha Centauri: Nearest Star System to the Sun The two main stars are Alpha Centauri A and Alpha Centauri B, which form a binary pair. The third star, which may or may not be part of the system, is Proxima Centauri. It is about 4.22 light-years from Earth and is the closest star other than the sun.Alpha Centauri A and B orbit a common center of gravity every 80 years. The average distance between them is about 11 astronomical units (AU) — about the same distance as the sun is to Uranus.These stars are an average of 4.3 light-years from Earth.t is about 4.22 light-years from Earth and is the closest star other than the sun. Alpha Centauri A and B orbit a common center of gravity every 80 years.
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Stars in Orion The stars to the left are magnitude 13 and 18, so they differ by a factor of 100. Similarly, a magnitude 1 star is 100 times brighter than a magnitude 6 star. This might seem confusing to you, but astronomers have used magnitude for thousands of years. Astronomers measure distance in light-years. One light-year is the distance light travels in one year: 9,458,000,000,000 kilometers. A light-year is a long way: to go one light-year in the Space Shuttle would take you about 40,000 years! The table below shows magnitudes and distances for the seven stars that make up Orion.
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- A good approximation would be: 1 light-year = 63240 AU (astronomical units) Just for information, 1 light-year is equivalent to the distance travelled by light in 1 year moving in a vacuum. 1 light-year is about 9.4607 * 1015 metres. 1 astronomical unit (AU) is equivalent to the average radius of the Earth's orbit. 1 AU is about 1.4960 * 1011 metres.
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- A light-year, also light year or lightyear (symbol: ly) is a unit of length, equal to just under 10 trillion kilometers (10×10 15 meters, 10 petameters or about 6 trillion miles).
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What is an Astronomical Unit (AU)? If that seems confusing, just think of it as roughly the same as saying an astronomical unit is the distance from the center of the Earth to the center of the Sun. The actual figure for an AU yielded by this definition, and by the most modern measurements, is approximately 92,955,807 miles (149,597,870.691km).
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- Astronomers use astronomical units – or AU – to describe solar system distances. Definition of AU here. Also, mean distances in AU to prominent solar system objects. Earth and the sun, as viewed by the Space Shuttle Discovery. An astronomical unit is the average distance between these two bodies in space.
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- Antares is a red supergiant. It is approximately 800 times larger than our own Sun. The Sun has a diameter of 1.392 million kilometers so Antares is approximately 1.113 bill…ion kilometers. This means that about 512 million Suns would fit inside Antares. Light would take about 1 hour to cover this distance. See related links for more information and pictorial size representation.
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High School Earth Science/Telescopes A light-year is a unit of distance that is defined as the distance that light travels in one year. One light-year is approximately equal to 9,500,000,000,000 (9.5 trillion) kilometers, or 5,900,000,000,000 (5.9 trillion) miles. That's a long way! By astronomical standards, it's actually a pretty short distance.
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- It is about 4.22 light-years from Earth and is the closest star other than the sun. Alpha Centauri A and B orbit a common center of gravity every 80 years. The average distance between them is about 11 astronomical units (AU) — about the same distance as the sun is to Uranus.