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

What is a hormone, What is a hormone? A hormone, as you may already kno...

What is a hormone? A hormone, as you may already know, can be described as a chemical substance which having been formed in one particular organ or a gland is carried in the bl

Role of communication in cultural understanding, Role of communication in c...

Role of communication in cultural understanding: In the area of cultural promotion, communication media can be used  to meet the two fundamental needs. Firstly, the media like

What role they play in clinical trials, Question 1 Differentiate between t...

Question 1 Differentiate between types of clinical trials and bring out the importance of SAD Studies and MAD Studies Question 2 What is the difference between randomization

Explain the objectives of amino acid or nucleotide metabolic, Explain the O...

Explain the Objectives of amino acid and nucleotide metabolis ? Here you will be able to: 1. explain how amino acids are catabolized in the body, 2. describe the synthesis of u

Explain structure of steroids, Explain structure of  steroids Basic s...

Explain structure of  steroids Basic structure of  steroids consist of  three cyclohexane rings (1, 2, 3 rings) and one cyclopentane ring (ring 4)  as  in  the Figure .  The p

Matter, what is meaning of solid'' liguid'' gases?why eresers float in wate...

what is meaning of solid'' liguid'' gases?why eresers float in water?why deos paper sink in water?

Critique of articles on VTE, Due Date: May 15, 2016 23:59:59 Max Poin...

Due Date: May 15, 2016 23:59:59 Max Points: 150 Details: Prepare a critical analysis of a qualitative study focusing on the problem statement, study purpose, research questi

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