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

Observe the surface of the moon, Observe the surface of the moon :- Use ...

Observe the surface of the moon :- Use the small telescope or a pair of field glasses. Examine the surface of the moon and see if you can see any of its craters and mountains.

Define the type of macrophages, Define the Type of Macrophages Macropha...

Define the Type of Macrophages Macrophages are of two types: a) Fixed types, and b) Wandering types

Carbohydrates, define carbohydrates.give a brief account on classification ...

define carbohydrates.give a brief account on classification of carbohydrates.

Equinoxes are day and night of equal length around the world, During which ...

During which equinoxes are day and night of equal length around the world: Autumnal And Vernal Equinoxes

Fire hazard, introduction to fire hazard

introduction to fire hazard

Transfer from large containers, Transfer from Large Containers : As with a...

Transfer from Large Containers : As with all dangerous operations, it will pay you to think what the worst possible accident may be that could result from your actions and what wo

Technical developments in feudal society , Technical Developments in Feudal...

Technical Developments in Feudal Society: Other innovations used and improved by  the Europeans were the lenses  and the spectacles. This gave an  impetus to the further study

What is topography, What is Topography The location of a soil on a land...

What is Topography The location of a soil on a landscape i.e., topography or relief of the land is an important passive factor in soil formation as it can affect the impact 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