Thousands
this paul g. n the answer tens.. (apex)
it is either light years or kilometers
No, 'years' is a measure of time and 'light years' is a measure of distance.
Well, normal miles or kilometers would be far too small for the scale of distance between stars. It's basically like saying I am going to measure the whole Earth in inches. It is going to be quadrillions of inches. There is no way! Same with stars the number is too high and light years are easier.
To measure the distance of stars you have to measure by light years.
Light years
attive
It can be continuous or discrete: If you're only talking about whole numbers of years (integers) then it's discrete. If you can include parts of years (for example "I've been studying for 4 and a third years") then it's continuous. "...4 and a third years" is not in itself discrete or continuous as a number on its own does not have this property. It's the act of breaking down the year into sub-sections (of which there are an infinite number) that makes the SCALE "years of education" continuous. To clarify: if you're breaking a scale up into a number of sub-sections that you can count (eg. even if you specify half-years as a measure it is still discrete, as there are only 2 half-years for every year). If you're not specifying the accuracy of the measure then it's continuous as you can say 4.5, 4.6 and you can always go more accurate (4.5158956398365 for example).
One million years on the geological time scale represents one million years of Earth's history. It is a unit of time used to measure and discuss long-term geological events and processes.
The number of years represented by 1 cm depends on the specific context of the timeline being measured. For instance, in a historical timeline where 1 meter represents 100 years, then 1 cm would represent 1 year. Conversely, if the scale is different, such as 1 meter for 1,000 years, then 1 cm would represent 10 years. Therefore, without additional context, the answer varies.
Using the "short scale" number names (new name every thousand), "one thousand million years" is a "billion years", the metric equivalent being a "gigaannum" (1 Ga). (see link)
None. A light year is a measure of distance, not of time.