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Star Formation
Star Formation

Grand Tour Worksheet - School District of La Crosse
Grand Tour Worksheet - School District of La Crosse

... 8. How far is the Andromeda galaxy from us? 9. Galaxies may range up to an___________of magnitude larger than our _________ __________ 10. Is the upper limit on the mass of a galaxy knows? 11. Are all galaxy spiral shaped, explain? ...
GO1_Distrubtion Of Matter In Space
GO1_Distrubtion Of Matter In Space

... • As more material is drawn into the spinning ball, the mass at its core increases causing the temperature to rise and possibly start to glow (called a pro-star) • As the process continues, heating in the core can reach 10 000 000oC and causes the fusion of hydrogen into helium. • As a star is ‘BORN ...
Brichler-powerpoint
Brichler-powerpoint

... • An object that orbits a star. • It must be large enough to have become rounded by it’s own gravity. • It must be the largest object in it’s orbit causing all particles to gravitate toward it. ...
Chapter 1 Starts and Galaxies
Chapter 1 Starts and Galaxies

... Doppler effect- apparent change in the wavelength of light that occurs when an object is moving toward or away from the Earth Big-bang theory- theory that states that the universe began to expand with the explosion of concentrated matter and energy and has been expanding ever since Gravity- force of ...
Document
Document

... The fractional change in energy is equal to the fractional change in radius. Once the cloud is producing stellar luminosities it is called a protostar. When the pressure in the core is sufficient to halt collapse the star is on the Main Sequence. ...
Stars-Chapter 18
Stars-Chapter 18

... – Smaller stars will live on for billions of years because they burn their fuel much more slowly ...
Stars Notes
Stars Notes

... • These stars continue fusion, producing successively heavy elements until their core becomes iron (600,000,000 °C ) • When the entire core becomes iron fusion stops, signaling a violent end… ...
The Life Cycle of a Star
The Life Cycle of a Star

... dwarf forms from the core. • If it is of high mass, death occurs in a massive explosion known as a supernova, the remaining core then transforms into a neutron star or a black hole. ...
Stars
Stars

... because it is electron degenerate, energy created will not expand the star and shut off the fusion. • So, entire star (carbon, mostly) undergoes fusion at once. What a star normally takes billions of years to burn, this star burns all at once. BIG explosion! ...
Red Giants - Uplift North Hills Prep
Red Giants - Uplift North Hills Prep

... First, there was a nebula. Or: last, there was a nebula. ...
The Fingerprints of Atoms
The Fingerprints of Atoms

... seen at λ = 6565Å. What is the object’s speed? Δλ = 2Å, so that Δλ/λ0 = 2/6563 = 3 x 10-4 Using the above formula, v/c = 3 x 10-4. V = (3 x 10-4)c = (3 x 10-4)(3 x 105 km/s) = 90 km/s. Since the wavelength has increased, the object is moving away from us (it’s redshifted). ...
Slide 1
Slide 1

... After the Sun's core hydrogen is depleted by nuclear fusion the core will consist primarily of 1) carbon. 2) deuterium. 3) helium. 4) oxygen. ...
Stars Notes
Stars Notes

... contracting gas and dust from a nebula become so dense and hot that nuclear fusion starts ...
PREVIEW-Reading Quiz 06 - Chapter 12
PREVIEW-Reading Quiz 06 - Chapter 12

... We are going to add some extra explanation of what degeneracy means in a star. "Quantum mechanics restricts the number of electrons that can have low energy. Basically, each electron must occupy its own energy state. When electrons are packed together, as they are in a white dwarf, the number of ava ...
Equivalent Widths and Chemical abundances Equivalent
Equivalent Widths and Chemical abundances Equivalent

... differences between these subjects. First, some new physics becomes important, including: 1) Convective (and conductive, in white dwarfs) energy transport becomes important 2) Nuclear Energy generation becomes important 3) Spherical symmetry is now the common geometry instead of plane parallel 4) Te ...
The Fate of Massive Stars
The Fate of Massive Stars

Slide 1
Slide 1

What is a star? A star is a giant ball of gases held together by gravity
What is a star? A star is a giant ball of gases held together by gravity

... black hole is a massive star that has collapsed onto itself. It is very dense. Its gravity is so strong, not even light can escape. It is invisible. Scientists have evidence that a black hole is the center of the Milky Way Galaxy. Its mass has been estimated at over three million times the mass of o ...
here - Boise State University
here - Boise State University

... 14. What is the cycle or phase a star will spend most of its life in? 15. If our sun is currently 5 billion years old, how much longer will the sun shine brightly for before it runs out of fuel to burn? 16. After our Sun runs our of Hydrogen fuel, what kind of star will it become? 17. What is the na ...
Astronomy 2
Astronomy 2

... no two are alike) ...
Star Jeopardy "Review #1
Star Jeopardy "Review #1

Star Formation
Star Formation

... and spend most of their lives • Once on the main sequence, a star stays in the same location on the H-R diagram until it runs out of fuel and begins to die ...
Spiral Elliptical Irregular - SMS 8th Grade Astronomy Unit
Spiral Elliptical Irregular - SMS 8th Grade Astronomy Unit

... We are __________________ million miles away from the sun This is called an Astronomical Unit (AU) (it would take a jet 17 years to travel this far!) Pluto is 39 AU from the sun…How many miles is that? _____________________ Anything farther than objects in our solar system has to be measured in ligh ...
Homework #3 10 points Question #1 (2 pts) The brightest star in the
Homework #3 10 points Question #1 (2 pts) The brightest star in the

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Future of an expanding universe

Observations suggest that the expansion of the universe will continue forever. If so, the universe will cool as it expands, eventually becoming too cold to sustain life. For this reason, this future scenario is popularly called the Big Freeze.If dark energy—represented by the cosmological constant, a constant energy density filling space homogeneously, or scalar fields, such as quintessence or moduli, dynamic quantities whose energy density can vary in time and space—accelerates the expansion of the universe, then the space between clusters of galaxies will grow at an increasing rate. Redshift will stretch ancient, incoming photons (even gamma rays) to undetectably long wavelengths and low energies. Stars are expected to form normally for 1012 to 1014 (1–100 trillion) years, but eventually the supply of gas needed for star formation will be exhausted. And as existing stars run out of fuel and cease to shine, the universe will slowly and inexorably grow darker, one star at a time. According to theories that predict proton decay, the stellar remnants left behind will disappear, leaving behind only black holes, which themselves eventually disappear as they emit Hawking radiation. Ultimately, if the universe reaches a state in which the temperature approaches a uniform value, no further work will be possible, resulting in a final heat death of the universe.
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