StudentShare
Contact Us
Sign In / Sign Up for FREE
Search
Go to advanced search...
Free

(need to be determined) - Essay Example

Cite this document
Summary
This unobservable mass is referred to as the dark matter (Bertine 2010). The ingredient does not emit any kind of energy or light. The scientists think that the dark matter…
Download full paper File format: .doc, available for editing
GRAB THE BEST PAPER98.5% of users find it useful
(need to be determined)
Read Text Preview

Extract of sample "(need to be determined)"

What is a Dark Matter? About 80% of the universe mass constitutes materials that the scientists cannot observe directly. This unobservable mass is referred to as the dark matter (Bertine 2010). The ingredient does not emit any kind of energy or light. The scientists think that the dark matter dominates. The 1950s study of the other galaxies first showed that the universe was composed of more dark matter than the naked eye could see. In the recent years, there has been improvement in the science of study of the dark matter (Spooner and Kudryavtsev 2001).

However, note that there is still no strong/ solid evidence to demonstrate detection of dark matter. Image: Dark matter ring captured by NASA through a Hubble space telescope in the galaxy Some familiar materials that exist in the universe, they are made of neutrons, protons and electron and these materials are called the baryonic matter. The dark matter can either be made of non-baryonic matter or baryonic matter. To hold the universe elements together, the dark matter has to consist of about 80% of the matter (Bahcall et al. 2004). Proving the UnseenOne interest thing about the dark matter is that the scientists cannot see it.

Then how do they know it exists in the first place? Scientists have learned to calculate the mass any huge object’s in the space through the study of their movement. In the 1950s when some scientists were examining spiral galaxies, they expected to witness the materials at the center to be moving fast as compared to those on the outside (Spooner and Kudryavtsev 2001). Against their expectations, the scientists discovered that the stars that were in the same position were traveling at a similar velocity.

The results indicated that the galaxies are made of a lot of mass that cannot be seen. The elliptical galaxies studies further indicated that visible objects had more mass. Albert Einstein proved that huge objects in the space bend light and distorted it, making them be used as lenses. Through the study of light distortion in the universe, the scientists have been able to create dark matter maps in the universe (Bertine 2010). Spiral Galaxies Dark MatterThe gravitational mass can be derived from the observation of movement of the gas clouds and the stars motion is the disk as the spiral galaxy (for example the Milky way) in the disk as they circle the center (Rubin 1997).

The galaxy rotation curve reveals how the speed of the stars around the center as the gap from the center increases. The majority of the spiral galaxies are known to reveal flat rotational curves out in the longest distance they can be traced, even after they disappear into the distance. It is, therefore, reasonable to conclude that the gravitational mass is 10 times in term of mass as compared to the luminous mass.Clusters of Galaxies Dark MatterThe gravitational mass can be derived from the clusters of galaxies by measuring the orbital movements of the member galaxies.

Since the clusters have galaxies being approximately the same distance from the scientists, it is possible to interpret any kind of spread in the galaxies redshifts as the orbital movements around the center of the cluster (this may go to as high as 1000 km/sec) (Sanders 2010). Through the measure of a many galaxies as possible in the cluster, it is possible to calculate the gravitational mass required to maintain the galaxies in the orbits instead of going away from the circle. The resultant gravitational mass can then be compared to the luminous mass that comes from the galaxies in addition to the mass contributed by the X-ray gas (Bahcall et al. 2004).The science of black matter has come from nowhere in the early days of 1950s and at least it is headed to certainty.

Powerful equipment aimed at space study promises a detailed study of the hidden matter. NASA’s contributions have specifically been fruitful in understanding the dark matter. With more studies deployed on the cluster and spiral galaxies, supported by Albert Einstein theories and it is certain that the dark matter will come to understood in a broader aspect.ReferenceBahcall J.N., Piran T., and Weinberg S. (2004). Dark Matter in the Universe. WorldScientific Publishers.Bertine G. (2010). Particle Dark Matter: Observations, Models and Searches.

CambridgeUniversity Press.Rubin V.C. (1997). Bright Galaxies, Dark Matters. Springer Science and Business Media.Sanders R.H. (2010). The Dark Matter Problem: A Historical Perspective. CambridgePress University.Spooner N.J., and Kudryavtsev V. (2001). The Identification of Dark Matter: Proceedingsof the Third International Workshop on “The Identification of Dark Matter.” World Scientific Publishers

Read More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“(need to be determined) Essay Example | Topics and Well Written Essays - 500 words - 1”, n.d.)
(need to be determined) Essay Example | Topics and Well Written Essays - 500 words - 1. Retrieved from https://studentshare.org/physics/1697018-need-to-be-determined
((need to Be Determined) Essay Example | Topics and Well Written Essays - 500 Words - 1)
(need to Be Determined) Essay Example | Topics and Well Written Essays - 500 Words - 1. https://studentshare.org/physics/1697018-need-to-be-determined.
“(need to Be Determined) Essay Example | Topics and Well Written Essays - 500 Words - 1”, n.d. https://studentshare.org/physics/1697018-need-to-be-determined.
  • Cited: 0 times

CHECK THESE SAMPLES OF (need to be determined)

MPH 504 - Epidemiology (Module 4 - SLP)

Other four aspects which need to be determined are dose-response relationship, consistency of association, temporally correct association and biological plausibility.... It is also a measure of non-dependence (Viera, 2008).... Odds ratio is very important in logistic regression and it treats both the variables in the study symmetrically unlike… Thus Odds ratio has a major role to play in descriptive statistics....
2 Pages (500 words) Essay

3 QUESTIONS IN CRIMINAL JUSTICE and deviance

It is apparent from the American Dream that the American citizens need to be determined to achieve material wealth, and that Criminal Justice {Unit – of of Does the concept of the “American Dream” contribute to the frequency of deviance in US society?... It is apparent from the American Dream that the American citizens need to be determined to achieve material wealth, and that they should be aware of the failure....
2 Pages (500 words) Coursework

Level of evidence

The sources of bias for each study need to be determined.... Various questions need to be addressed as to how the sample was selected, whether the characteristics of the... The policies and procedures are based on detailed evaluation of evidence from research on outcomes of treatment and various studies....
4 Pages (1000 words) Term Paper

The Case of Australian Securities and Investment Commission

The Case of Australian Securities and Investment CommissionIntroductionPaul, Kim and Karen are directors of the Sunset Industries Limited(SIL) and are involved in various issues that need to be determined by the Australian securities and investment commission(ASIC) whether they have breached any of the directors duties under the Corporations Act 2001....
2 Pages (500 words) Essay

The Fuel Consumption of Passenger Vehicles

In addition to the primary objectives, a number of different input and output parameters need to be determined to ensure that the engine is operating within safe limits and optimally.... The current study examined the fuel consumption of passenger vehicles by both laboratory testing and real life driving in order to arrive at a mathematical model that could be Utilizing theoretical and experimental methods, a uniform mathematical model was arrived at that could be applied to small parts of the overall drive cycle to predict fuel consumption without any need for physical testing....
2 Pages (500 words) Literature review

Discussion 1 Week 8 Comparing Decision Various and the Objective Function

As defined, the decision variables are “a set of quantities that need to be determined in order to solve the problem; i.... As defined, the decision variables are “a set of quantities that need to be determined in order to solve the problem; i.... In solving linear programming problems, two of the most important characteristics or ingredients are the decision variables and the objective function....
2 Pages (500 words) Assignment

Research and Referencing

Similarly, environmental factors like social class, culture, family etc also need to be determined at the time of launching or developing a specific mobile phone device.... In this competitive age, mobile phone plays a very vital role in the lives of human beings in order to make their professional communication extremely easy and quick....
2 Pages (500 words) Assignment

Managing Stress among Employees in Out-patient Setting

he organizational changes implemented to manage employees' stress need to be analyzed from the perspective of both employees and organization; it involves the application of formative evaluation phase.... Their new ways of working behavior both as individuals and as a team need to be evaluated for knowing whether the change takes a positive effect on them or not....
4 Pages (1000 words) Research Paper
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Contact Us