When measuring distances in space, the distances are so huge that using kilometres and miles becomes pointless. A number of other measuring systems are used. A light year is the distance that light travels in a year. It is about 9,460,730,472,581 kilometres or about 5,878,630,000,000 miles. After the sun the nearest star is over 4 light years away. Many of the stars you see in the sky are hundreds of light years away and much more. So it is a lot easier to say 100 light years than 587,863,000,000,000 miles.
A unit that is commonly used in astronomy is the light-year - the distance light travels in a year.
No. A light-year is a measurement. A light year is a distance measurement based on how far light travels in a year.
The unit of measurement used to measure distances between galaxies is typically the light-year, which is the distance that light travels in one year. This unit is used because of the vast distances involved in intergalactic space.
The unit of measurement is the "light year".
A light year is the distance light travels in a year. That is roughly 6,000,000,000,000 miles (six trillion miles). Thus such a unit is used only to measure the largest distances, those between stars and galaxies.
light-year
The distance light travels in one year is called a light-year. To get the number 9,470,000,000,000, the unit used is the kilometer.
"light-year"
A light year is a measurement of distance not of time.
Parsecs are used as units of measurement for the enormous distances in space. One parsec is roughly 3.3 times greater in distance than one light year. A light year is the distance light travels in one year in a vacuum.
Years are a measurement of time; light years are a measurement of distance. A light year is the distance light travels in one year (in a vacuum).
5.8 trillion miles = 1 light year. This is used to measure distances between galaxies and stars in space. As the distances are so vast, the measurement itself must be vast.