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The star alpha centaur is about 4.3 light years from earth how far is the distance in miles if a lightyear is the distance light beam that travels once 1 year And a beam of light travels 186000?
Wiki User
∙ 14y ago
I would say 4.3 x 186000
Wiki User
∙ 14y ago
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What is a light year used primarily to express distances?
Quite often they use parsecs, rather than light-years. In any case, it's fairly easy to visualize (for example) that Alpha Centauri is at a distance of 4.3 light-years - that means that light takes 4.3 years to travel that distance. On the other hand, giving the distance in meters, or in kilometers, results in very large numbers, that are a bit hard to visualize.
How does man specify interstellar distances when using the speed of light?
Our common terms for distance, miles and kilometers, are useful enough to measure distances around town, and even around the country. But for distances beyond our solar system, it's cumbersome to carry around a bushel-basket full of zeroes to add to the distance measurements. So we typically phrase things in terms of "light-years", the distance that light would travel on one year. Light moves at 186,000 miles or 300,000 kilometers per SECOND, so a light year is quite a distance; 186000 * 60 * 60 * 24 * 365.24 miles, which is 5,869,552,900,000 miles. The nearest star, Proxima Centauri, is four times FURTHER away at 4.2 light-years, so you can see that the distances to even the nearer stars are quite cumbersome when expressed in conventional units. In metric terms, we have, perhaps, another way to go. The standard distance is the "meter", and latinate prefixes are used to denote larger quantities, such as the kilo-meter, for 1,000 meters; about 6-tenths of a mile. In computer terms, the word "byte" is used to designate the storage space required to store one ASCII character. A "kilo-byte" is a thousand bytes (actually, 1024 bytes, but close) and a "megabyte" is a million (plus a bit) bytes. A gigabyte is a billion, and a terabyte is a trillion. So, let's extend that to astronomy. One light year is 5.8 tera-miles. . == ==
How long does it take for the sun to drifts completely around the sky?
That depends on where it's coming from. Just like any other voyage from one place to another, a longer trip takes more time. If the light is coming from the moon, it takes about 1.27 seconds. From Mars, when it's as close as it can get . . . 41/2 minutes. From the sun . . . . . 81/3 minutes From Pluto, when it's as close as it can get . . . 51/3 hours From the next nearest star past the sun . . . . . 4.3 years. From the nearest galaxy outside the Milky Way . . . . . 2,540,000 years. From the farthest objects that astronomers have been able to detect so far . . . . . 14,000,000,000 years.
What is 186000 miles?
The approximate distance that light travels in one second.
What travels at a rate of 186000 mile per second?
Light travels at 186000 miles per second in vacuum.
What travels at a rate of about 186000 mile per second?
Light.
What travels at approximately 186000 miles per hour?
All electromagnetic energy.
A radio wave travels 186000 mile per second How many kilometers will this wave go in one second if 1 mile equals 1.61km?
186000 miles per second = 186000 * 1.61 km per second.
What travels at appromimately 186000 miles per second?
That is a common estimate of the speed of light in vacuum.
Which vehicle travel 186000 miles per second?
No known vehicle travels at the speed of light.
What is 186000 times 186000?
186000 x 186000 = 34596000000
How many years are there in 1 lightyears?
The term lightyear(s) has nothing to do with time. It is used as an unit to express astronomical distances, hence is more related to distances. 1 light year is the equivalent in distance to what light would travel in a year at the rate of approximately 186000 miles per second.
How many miles does light travel in 1 microsecond in a vacuum the speed of light in a vacuum is 186000 miles per second?
Since a microsecond is a millionth of a second, just divide the distance light travels in one second, by a million.
How many picoseconds does it take for light to travel a mile?
Light travels 186000 miles (approximately) per second So 1 mile will be traveled in 1/186000 seconds. There are 10^12 picoseconds in a second Therefore light will travel 1 mile in (1/186000) x 10^12 picoseconds and that evaluates to 53763440.86 picoseconds
Can light travel more than 186000 miles per second?
Yes, light travels at 186,282.4 miles per second in a vacuum.
