Stellar parallax, Science

Assignment Help:

Stellar Parallax

If  the Earth were stationary, a given line  joining  point A on the Earth, a nearby star C and any given distant star would never vary. However, if  the Earth changed its position in space and moved  from A to B, this alignment would also change. Thus, in the background  of more distant stars, the hearby star would apwar to shift from C1  to C2  as the Earth moved  from A to B. This apparent shifting of nearby stars against the background of more distant ones has been observed, and the phenomenanis  called Stellar parallax. It is a periodic kind of a chahge. A given star first shifts one way and then the other, during the course of  one year, hence it must be due to the fact that the Earth is moving around the Sun.  

The change is small, less than a second of  an arc. It was only  in  1838  that Friedrich Bessel, a German astronomer, could measure the stellar parallax of  a  star. -1  he  nearest star, the Sun when viewed against distant stars appears to shift approximately  1" per day.  


Related Discussions:- Stellar parallax

Difference between a rock and a mineral , Definition of a rock and the diff...

Definition of a rock and the difference between a rock and a mineral ? A rock is a mixture of one or more minerals. There are many kinds of rocks, and we will learn about them

Weather, which instrument measure the air pressure

which instrument measure the air pressure

Matter, which is the heaviest matter in the world

which is the heaviest matter in the world

Bullock cart, how is metal tyre fitted on the wheel of bullock cart

how is metal tyre fitted on the wheel of bullock cart

Kingdom Quiz, What are the different modes of nutrition for paramecium?

What are the different modes of nutrition for paramecium?

Define the nature of sound, Define the Nature of Sound This section is ...

Define the Nature of Sound This section is a recapitulation of what you have learnt in school. You would recall that sound waves consist of the longitudinal waves of alternate

How to make an experimental biter, How to make an experimental biter Fi...

How to make an experimental biter Fit a one-hole stopper carrying a short length of glass tube into the small end of a lamp chimney. Put a little cotton wool in the bottom and

Mini-mental state examination - mmse test, MMSE To assess Mr. X's orient...

MMSE To assess Mr. X's orientation, language skills, constructional ability, memory, calculation ability, and reasoning, he was administered the Mini-Mental State Examination -

Diagnosis and prognosis in iron age, Diagnosis and Prognosis: The dia...

Diagnosis and Prognosis: The diagnosis and prognosis of disease were done directly by  seeing, hearing, smelling and touching all external human organs and human waste and of

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd