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Most stars have such small parallax shifts that accurate measurement is always possible?
On the contrary, if the parallax angle is too small, it can't be measured accurately.
Do acute angles measure 180 degrees?
no, they're 90 degrees or less. a way to remember is aCUTE angle. a small angle is sorta cute right?
Is obtuse angles small or large?
It depends on your definition of small and large. Obtuse angles are ones that are more than 90 degrees and acute angles are less than 90 degrees. If you forgive the bad graphics.. Obtuse: \_ Acute: /_
What is the most reasonable unit of measure for a small can of juice?
You can use cups to measure a small can of juice.
What is an antimeter?
An antimeter is a modification of the quadrant for measuring small angles.
Why can't the parallax effect be used to measure distances to other galaxies?
The parallax angle of such distant objects is way too small to be measured. In general, the farther away an object, the smaller is its parallax angle.
Why were ancient people unable to detect stellar parallax?
they couldn't measure small angles
Why can't astronomer measure the parallax of a star that is a million lights away?
The farther the object, the smaller its parallax. In this case, the parallax is about 1/300,000 of an arc-second (and an arc-second is 1/3600 of a degree) - way too small to measure. Perhaps you will eventually find a way to measure smaller parallax angles.
Why were early astronomers unable to detect stellar parallax?
Early astronomers were unable to detect stellar parallax because the distances to stars were much greater than previously thought, leading to extremely small parallax angles. The technology and instruments available at the time were not precise enough to measure these tiny angles accurately. It wasn't until the 19th century, with the advancement of telescope technology and more accurate measurements, that stellar parallax was finally observed.
Considering that the more distant an object is the smaller the angle it will make why would parallax measurements be better suited for stars than for galaxies?
Parallax measurements rely on observing the apparent shift of a nearby star against a distant background as the Earth orbits the Sun. The angles involved are typically too small to accurately measure in the case of galaxies due to their vast distances. Galaxies are so far away that any parallax shift would be extremely minute and challenging to detect accurately.
If a star's parallax angle is too small to measure what can you conclude about the star's distance from earth?
It means that the distance is greater than a certain amount - depending on how precisely you can measure the parallax.
Parallax would be harder to measure if?
A parallax is hard to measure if it is very small - and this happens when the corresponding object is very far away.
Why can't astronomers measure the parallax of a star that's a million light years away?
At larger distance, the parallax becomes smaller, and therefore harder to measure. Even the closest star (Toliman) has a parallax of less than one arc-second (1/3600 of a degree), which is difficult to measure. Stars that are farther away have a much smaller parallax.
How far out does parallax work?
Parallax is most commonly used to measure distances up to a few thousand light-years within our galaxy. Beyond this distance, the angle of parallax becomes too small to accurately measure. Astronomers rely on other methods, such as standard candles or redshift, to estimate distances to more distant celestial objects.
If a star's parallax angle is too small to measure what can you conclude about the star's distance from the earth?
It means that the distance is greater than a certain amount - depending on how precisely you can measure the parallax.
Why can parallax only be used to measure distance to star that are relatively close to earth?
At farther distances, the parallax becomes too small to measure accurately. At a distance of 1 parsec, a star would have a parallax of 1 second (1/3600 of a degree). (The closest star, Toliman, is a little farther than that.) At a distance of 100 parsecs, the parallax is only 1/100 of a second.
Is it true or false astronomers have calculated the parallax angles of millions of stars?
True, astronomers have calculated the parallax angles of millions of stars by observing their apparent shift in position as Earth orbits the Sun. This allows astronomers to determine the distance to those stars using trigonometry.
