100 000 000 000 000km is equal to 1.57 lightyear. Rigel, which is the brightest star in Orion, is 777 lightyear away from earth. Is this was measured in km, it would be 7 381 500 000 000 000 km away. It only makes it easier to express the to measure the extreme distances found in space. One would not measure the distance between New York and Paris in millimeters. The final number would have far too many digits.
light years
Yes, astronomers use light-years to measure the distance between stars in space. A light-year is the distance that light travels in one year, which is about 9.46 trillion kilometers or 5.88 trillion miles. This unit of measurement is more practical given the vast distances in space.
. . they are a convenient unit. Another convenient unit is the parsec.
A light-year is most appropriate for measuring astronomical distances between stars and galaxies due to its vast scale. It represents the distance that light travels in one year, which is about 5.88 trillion miles.
light years
The distance between stars can be anything from light minutes to billions of light years.
Stars are not measured in light years. The distance between them is.
The correct unit to describe the distance between stars is the "light year", the distance a photon of light would travel (through a vacuum) in a year.
The distance between stars can be anything from light minutes to billions of light years.
light years
Light Years.
Light Years.
in light years
Because the distance between stars is so great.
Light year or astronomical units
expressed light. (light given off.)
The distance between stars is a couple of order of magnitudes higher than the distance between planets.To put this into perspective, the distance between earth and the sun is 8 light-minutes and the distance between other planets doesn't go further than a few light-hours. On the other hand, the distance between our sun and the nearest star (alpha centauri) is 4.4 light-years. This means that this distance is about 38544 larger than the distance between planets.Beyond that, the distance between stars can be extremely high: a star on the other side of our galaxy will be about 100000 light-years away from us. The distance will keep rising as we move on to different galaxies, then different galaxy clusters, the super clusters and then, finally, the width of the universe.