Stellar parallax, Science

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.  

Posted Date: 9/28/2012 1:10:35 AM | Location : United States







Related Discussions:- Stellar parallax, Assignment Help, Ask Question on Stellar parallax, Get Answer, Expert's Help, Stellar parallax Discussions

Write discussion on Stellar parallax
Your posts are moderated
Related Questions
Palaeontological Evidence: Palaeontology  is a branch of  earth sciences, which is essentially a study of plant and animal life in the past geological periods, millions of ye

Explain the Digestion of Food Salivary amylase or ptyalin acts on cooked starches (polysaccharides) and changes them into maltose as shown herewith. Boiled starch → soluble

If I send you ab assignment can you finish it by midnight central time TONIGHT

give the importants segnificant figure in measure quantities

To show that liquids exert pressure Connect two 15 cm lengths of glass tubing or two transparent plastic soda straws with a short length of rubber tubing and attach them to an

I have a vocabulary quiz tommorrow! WHat am I supposed to do

Solar energy: The energy we get today from the fossil fuels like coal, is in reality sun's energy,  trapped in them millions of years ago. Plants make their food and grow bec


#2 DESCRIBE THE APPEARANCE OF THE STOMATE AND THE GUARD CELLS.

Explain Protein  Protein  is  derived  from  a  Greek word  "PROTOS"  which  means  "Pre eminent", "jht or foremost"  or  primary matter.  This  name was  suggested  by  Berzi