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What unit have astronomers chosen to measure the distance to stars?
Light years and parsecs. A light year is approximately 9,470,000,000,000,000 meters (9.47x10^15) and a parsec is roughly 3.26 light years
How many high schoolers will become astronomers?
In North America, the percentages are VERY small. According to the American Astronomical Society, about 150 positions open for astronomers each year. This compares to 3.4 million people who graduate from high school annually.
Why is the light year a useful unit for measure distances to stars?
Because it is a large number, suitable for large distances. Astronomers also like to use the unit Parsec.
How a light year is a measure of distance AND why it is necessary to use light years as a unit of measure?
1. We know how fast light travels, therefore in 1 year it must travel a fixed distance. For this purpose astronomers use the Julian year of 365.25 days, making a light year 9.460730473 times 10 to the power 15 metres.. 2. It is used as a unit of distance to describe distances of stars and galaxies, mainly because to express these distances in kilometres would give unmanageably large numbers.
What does the phrase light year mean?
a lightyear is a measure of distance that is the distance light will travel in one year. yes also it can travel in 24 hours
Bridge to Algebra 2001-2002 Marcy Mathworks?
according to astronomers what is a light year
How do astronomers describe distance?
Using light years, which means the distance light travels in a year.
Why do astronomers use light year to measure time in space?
They don't. Light years are a distance measurement, not a time measurement.
What is used to measure space?
Units of volume are. For big distances, astronomers use "light years" and "parsecs". A light year is the distance that light travels through space in one year.
Why is star distances measured in light year?
because the stars are very far away so the astronomers use light years
What do ostranamas measure in light year?
Never heard of ostranamas, but astronomers use light years to measure distances in space. A light year is the distance that light can travel (in a vacuum( in a year and is slightly less than 2.4 trillion kilometres.
How do astronomers know the universe is infinite?
The universe is not infinite. It is 156 billion light-years wide. A light-year is equivalent to about 9,500 billion km
Define light year and explain its value in astronomy?
A light-year is the distance light travels in a year - equivalent to almos 10 million million (or 1013) kilometers. In popular astronomy, distances to stars or galaxies are often stated in light-years; although astronomers often prefer another measure, the parsec, equivalent to about 3.26 light-years.A light-year is the distance light travels in a year - equivalent to almos 10 million million (or 1013) kilometers. In popular astronomy, distances to stars or galaxies are often stated in light-years; although astronomers often prefer another measure, the parsec, equivalent to about 3.26 light-years.A light-year is the distance light travels in a year - equivalent to almos 10 million million (or 1013) kilometers. In popular astronomy, distances to stars or galaxies are often stated in light-years; although astronomers often prefer another measure, the parsec, equivalent to about 3.26 light-years.A light-year is the distance light travels in a year - equivalent to almos 10 million million (or 1013) kilometers. In popular astronomy, distances to stars or galaxies are often stated in light-years; although astronomers often prefer another measure, the parsec, equivalent to about 3.26 light-years.
What do astronomers use to measure distance to stars?
If you refer to the units, both the light-year and the parsec are often used. A light-year is the distance light travels in a year; about 9.5 x 1012 kilometers (9.5 million million kilometers). A parsec is about 3.26 light-years.
What do astronomers use measure to distances to nearby stars?
Two units that are commonly used are:* Parsecs (among professional astronomers) * Light-years (in popular astronomy) A light-year is about 9.5 million million kilometers. A parsec is about 3.26 light-years.
What unit have astronomers chosen to measure the distance to stars?
Light years and parsecs. A light year is approximately 9,470,000,000,000,000 meters (9.47x10^15) and a parsec is roughly 3.26 light years
What unit do astronomers usually use to measure the distance to a star?
They use light years, the distance light can travel in 1 year. It's equivalent to 5878499810000 miles.
