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Parallax is the change in view, on in perspective, when viewing things from two different places. At its smallest effect, we see parallax when we stand still and look a a nearby object with the right eye, and then with the left eye. The nearby object seems to jump just a little when compared to the more distant background.
With stars, we take a slightly longer view. Photograph an area of the sky in January or March, and then again six months later. The radius of the Earth's orbit is 93 million miles, so this gives us a point of separation of 186 million miles. When we do this, we can see nearby stars appear to jump, when compared to the very distant stars; this allows us to calculate the distances to the "nearby" stars; those within about 500 light years away.
When we measure the "jump", we're measuring tiny distances of arc. An object far enough away to display one arc-second (one 60th of a minute, which is 1/60th of a degree) of difference when viewed from opposite sides of the Earth's orbit is said to be "one PARallax-SECond of distance" away, or one PARSEC. This is about 3.26 light-years away.
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The apparent shift in the position of nearby stars when compared to distant stars is?
Doug Fany answer: Parallax
Distance to nearby stars can be determined from?
stellar parallax
Method to measure the distance to nearby stars directly?
For nearby stars, the parallax method gives the most accurate measure of distances.For nearby stars, the parallax method gives the most accurate measure of distances.For nearby stars, the parallax method gives the most accurate measure of distances.For nearby stars, the parallax method gives the most accurate measure of distances.
What can parallax be used to determine about a star?
Parallax is a method used to find the distances of stars.
Is spectroscopic parallax is more accurate than trigonometric parallax for measuring nearby stars?
false.
What is the apperent movement of stars called?
parallax
Which stars have the largest parallax angles-?
the stars nearest Earth
What was ptolemy's explanation regarding the parallax of stars?
Ptolemy had no way to detect or measure the parallax of stars, and was completely unaware of it. So the lack of any explanation was no problem.
The distance to nearby stars can be measured by using?
Parallax
What is most useful in determining the position of stars?
parallax
What can distances to nearby stars determined by?
Stellar parallax
What effects doe lengthening the distance from the observer have on parallax?
The parallax should get smaller and harder to notice although in astronomy there are techniques used to find the parallax of stars by using the Earth's position around the sun to find the distance of the stars.
