You can use kilometer, but end up with fairly large numbers, which are best written in scientific notation. It is quite possible to deal with those, but perhaps due to a lack of familiarity of the general public with scientific notation, light-years and parsecs are often used instead. When using these units, you end up with smaller numbers. For example, the distance to the nearest star (after the Sun) is about 4.2 light-years; each light-year is about 9.5 x 1012 km, that is a 13-digit number if you write it out.
There are 1000 metres in 1 kilometre. Therefore, a metre is larger than a kilometre. (You use metres and kilometres to measure large distances)
Kilometres are comparable to Miles. You can measure long distances such as the distance between two cities, etc. 1 kilometre equals 0,62 miles.
No. Kilometre is a measure of distance.
Speed. Kilometre measure distance, and hour is a measure of time. Distance / Time = Speed.
No. A hectare is a measure of are, a kilometre is a measure of distance. Conversion from one to the other is not valid.
It is possible that someday astronomers will measure all the distances of the 100 billion galaxies in the universe.
There are 1000 metres in 1 kilometre. Therefore, a metre is larger than a kilometre. (You use metres and kilometres to measure large distances)
Someday astronomers may have measured all the distances of 100 billion galaxies in the observable universe.
because it is the fastest way to measure in very long distances for example earth to other far away planets
because it is the fastest way to measure in very long distances for example earth to other far away planets
Kilometres are comparable to Miles. You can measure long distances such as the distance between two cities, etc. 1 kilometre equals 0,62 miles.
The Parsec at 3.26 lightyears ; see related link below .
exploding white dwarfs
You can measure very large distances, such as the size of the observable universe or distances between galaxies, using yottameters. This unit of measurement is rarely used in practical applications due to its extremely large scale.
You can't convert between the two:- millilitres is a measure of VOLUME Kilometre is a measure of LENGTH
Light years are used in astronomy to measure very large distances in space. One light year is the distance that light travels in one year, which is about 9.46 trillion kilometers. It provides a convenient way to describe distances across galaxies or the universe.
Because, if we continued to measure the distances between star in miles, the numbers would be huge. One light-year is approximately equal to 5,865,696,000,000 miles !