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Light years, parsecs, and kiloparsecs. Light years and parsecs are used to measure distances between neighbouring star system's, kiloparsecs are used to measure distances within a galaxy.
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∙ 13y ago
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How do you determine how far away stars are from earth?
use a piggy bank and measure the distance from the piggy bank and a star
Do scientists measure a stars distance from earth in meters?
No, they are much too far away, and you would have a number too large to be usable.
Why must a star's parallax be known before you can find the luminosity?
What must be known is the distance. And the most accurate method to measure the distance of nearby stars is the parallax - but this method won't work for stars that are far away.
What is a light year and why do scientist use it?
A light year is a measure of how far light can travel in one year. It is a phenomenal distance, and is used to describe how far away stars are from us.
How far is venus away from the sun in grams?
Distance is a measure of length, grams is a measure of weight.
How do you measure the height of an object too far away to measure the distance to the object?
Use trignometry
What is the effect of the distance of the stars on its magnitude?
Magnitude is brightness. As stars are further away they're dimmer. It may seem like a star that twice as far away would be half as bright but it doesn't work that way. Brightness falls off in proportion to the square of the distance away. A star that is twice as far away is one-fourth as bright.
How far away is the galaxy Orion from earth?
Orion is a constellation, not a galaxy. The stars in it appear to form a pattern but they are not a unit and they are all completely different distances away. So there is no definitive distance that you can say Orion is away from us. You can only talk about the distance of individual stars that are in it.
Is a star with no measurable parallax is very close to Earth.?
No, if you can measure no parallax, the star is far away - further than a certain distance.
Parallax cant be used on a star if the star is too?
We can't use parallax to measure a stars distance from the Earth if the star is already too far away. The angles used in parallax measurment are already very small, and if the star is beyond a certain distance from us the angle becomes too small to measure, and no distance can be determined.To date the largest distance that can be measured using parallax, with the Hipparchos sattelite, is about 1 600 light years. This will be improved with the European Space Agencies Gaia mission in 2012 and 2013.
Are stars far away or close to the solar system?
stars are pretty far away from the solar system
Why is the light year used to measure the distance between the stars and us instead of kilometres?
it is so far that kilometers wont work
