Theory of solar system, engineering, Other Engineering

Assignment Help:

Expertsmind.com brings you unique solution in electrical engineering

Define terms of Galaxy Clusters, Basic Astronomical Objects, Astronomical Distance Units, Terms relating to motion

Our solar system "The Milky Way" consists of:-

-          Sun (which is a star)

-          9 planets & their moons

-          Asteroids; chunks of rock

-          Comets; balls of ice

-          Countless tiny particles of interplanetary dust

- Galaxy: is a great island of stars, containing a few million to trillion or more stars.

The Milky Way
- Disk- shaped collection of stars
- contains more than 100 billion stars

- one of the two largest galaxies among the 40 galaxies in the local group

Galaxy Clusters: Groups of galaxies with more than a few dozen members.

Star: Large and glowing balls of gas that generate heat and light through nuclear fusion in their cores.
                   - Protostars: objects in the process of  becoming stars
                   - Neutrons: stars that have died.

Basic Astronomical Objects

Planet: A moderately large object that orbits a star. Planets may be rocky, icy or gaseous in composition, and they shine primarily by reflecting light from their star.

Moon/ Satellite: An object that orbits a planet

Asteroids: chunks of rock

Comets: balls of ice 

Collections of Astronomical Objects:

Super Cluster: A gigantic region of space that where many individual galaxies and clusters are packed closer together than anywhere else in the universe.
Universe: The sum total of all and energy , that is, everything within and between all galaxies.
Observable Universe: The portion of the entire universe that can be seen from Earth.

Astronomical Distance Units 

Astronomical Unit (AU): The average distance between the Earth and the Sun , which is about 150 million k.m
Light- Year: The distance that which light can travel in 1 year, which is about 9.46 trillion kilometers.

Terms relating to motion: 

Rotation: The spinning of an object around its axis. Earth rotates once each day around its axis, which is an imaginary line connecting the North and South poles.

Revolution: The orbital motion of an object around another. Ex. The Earth revolves around the sun once each year.

Expansion (of the universe):  We say that the universe is expanding because the average distance between galaxies is increasing in time. Note that while the universe as a while is expanding, individual galaxies and their contents are NOT expanding because of gravity forces.A planet is defined as an object that:-

1) orbits a star (but is itself neither a star nor a moon)
2) is massive enough for its own gravity to give it a nearly round shape.
3) Has cleared the neighborhood around its orbit

-The nearest star system to us is a 3-star system called; Alpha Centauri is about 4.4 light years away.

- The earth orbits the sun at a speed in excess of 100,000 km/h in a path called ecliptic plane.

-The axis tilt happens to be oriented so that it points directly at a star called polaris/North Star. (tilted by 23.5 degrees.

-The universe began in the big bang.


Related Discussions:- Theory of solar system, engineering

Aircraft internal and external markings, AIRCRAFT INTERNAL AND EXTERNAL MAR...

AIRCRAFT INTERNAL AND EXTERNAL MARKINGS SMOKING IN AIRCRAFT - Reference: ANO Article 66 and JAR-25.791 Every aircraft registered in the U.K. must have a notice indicati

Vertical spread, what are the no-arbitrage lower bound of the vertical spre...

what are the no-arbitrage lower bound of the vertical spread

Miller sweep generator, I want circuit diagram of miller sweep generator wi...

I want circuit diagram of miller sweep generator with components using two transistor bc547

Fluid (liquid) ice protection systems, FLUID (LIQUID) ICE PROTECTION SYSTEM...

FLUID (LIQUID) ICE PROTECTION SYSTEMS: Liquid ice protection systems can be used as either anti-ice or de-ice systems.  The system is designed to project a film or fluid over t

Water distribution, examples dead end water distribution system

examples dead end water distribution system

Series of cash flows in economical engineering, Series of Cash Flows M...

Series of Cash Flows Most engineering economic analysis involve more than a single return occurring after the investment is made. In such cases, the present worth or the futur

Static and dynamic balancing - propellers, STATIC & DYNAMIC BALANCING ...

STATIC & DYNAMIC BALANCING STATIC BALANCE When the weight distribution about the propeller axis is equal, with the propeller in any position, it is said to have static bal

International finance, What will be the effects of an increase in the money...

What will be the effects of an increase in the money supply on the interest rate? What will be the effects of an increase in real output on the interest rate?

Engineering signals, Engineering Signals A signal is a variation of a m...

Engineering Signals A signal is a variation of a measurable quantity that conveys information about the behaviour of a system. • A signal can depend upon a single variable o

Communication and scholarship, Illustrate the importance of communication i...

Illustrate the importance of communication in a retail business organisation?25 marks

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