can size of nearby stars be measured by Parallax method?Explain
Answers
The extension is limited. The parallax angle is small because stars are far away. Only for the more nearby stars it can be measured reliably. ... But the most distant objects for which distance can be determined by parallax are a few thousand light years away.
Not , accurately we can find !! Let me explain once a star parallax is known ,it's distance from earth can be computed by trigonometrically( parallax[ parsec.] Which is distance from sun to an astronomical object has parallax angle of one ( arcsecond) ... But the more distant object is, the smaller it's parallax , even yet techniques in astrometry, the limits of accurate measurement make distances farther away than about 100 parsec.(300ly ) which is too approximate to be useful when obtained by this technique!! i.e. this limits the applicability of parallax as a measurement of distance to objects that are relatively close on galactic scale..