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Some formulas for astronomy ASTR 122 Fall Quarter 2007 D. E.
Some formulas for astronomy ASTR 122 Fall Quarter 2007 D. E.

... • The energy radiated by a blackbody per unit surface area per unit time is related to the temperature of the surface by I = σ T4 where σ is a constant. • The wavelength of peak intensity of blackbody radiation is related to the temperature by ...
Name_______________________Period_________Date
Name_______________________Period_________Date

...  Massive stars undergo many reactions and produce many elements  Cannot support themselves and violently collapse on Themselves  Neutron Star– Collapse dense core of a star that forms quickly while its outer layers are falling inward  Supernova– Massive explosion that occurs when the outer layer ...
Classifying Stars
Classifying Stars

The Sun - Center for Astrophysics and Space Astronomy CASA
The Sun - Center for Astrophysics and Space Astronomy CASA

... Just gets hotter and heavier down in the middle of the star ...
The Observed Properties of Stars
The Observed Properties of Stars

... Stars look like points of light in the sky. How similar are they to the Sun? What do we need to measure about these stars in order to make “models” that can be compared to our model of the Sun? ...
Student 4
Student 4

... thought to be 10 billion years old and older than our galaxy. It must have been captured from elsewhere. Bernard’s star is travelling towards us at a very high speed. It will become closer to us than Proxima Centauri. The significance of Red Dwarfs to astronomy. Although intelligent life formed arou ...
Elements from Stardust
Elements from Stardust

... With the high pressure and hot temperature in the sun, nuclei of atoms are squeezed together and they collide. Nuclear fusion combines smaller nuclei into larger nuclei—making bigger and heavier atoms. ...
Life Cycle of a Star
Life Cycle of a Star

... sun will enter the ______________ _____________ phase, which means it loses its outer layers. The star’s mass is lost until it collapses into a _____________ dwarf, which will lose energy and become a ______________ dwarf. ...
Stellar Evolution and the Herzsprung-Russell Diagram
Stellar Evolution and the Herzsprung-Russell Diagram

Stars - Weebly
Stars - Weebly

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

Stars - winterk
Stars - winterk

... that it cannot support its weight (even if it’s fused into lead!) • The atoms collapse even further creating a ball of neutrons • This forms a rapidly spinning neutron star that is only a few kilometers in size • We see neutron stars from the radiation that shoots out of either end ...
Stars - Lauer Science
Stars - Lauer Science

... This leaves behind a black hole. Characteristics of a Black hole  Nothing can escape from a black hole.  We can detect black holes by ▪ X-rays coming from the hot gas going into the black hole. ▪ Effect of the black holes gravity on a nearby star. ...
Lecture 1 - University of Maryland Astronomy
Lecture 1 - University of Maryland Astronomy

... Armed as we now are, we can start surveying the universe. We’ll do this by moving outward: planets, stars, galaxies, and the universe itself. The Solar System Our Solar System is the one place in the universe that we know absolutely can support life! Therefore, as we go through this course, please h ...
Video: National Geographic: Journey to the Edge of the Universe
Video: National Geographic: Journey to the Edge of the Universe

... 31. Jupiter’s gravity pulls the ________________________ apart.  32. Jupiter is mostly made from _________________.  33. How fast do winds on Jupiter blow?   34. What is Jupiter’s great red spot?   35. How old is the great red spot?   36. What causes the auroras on Jupiter’s moons?   37. What gives  ...
Stellar Evolution
Stellar Evolution

... A star with 3x the sun’s mass or more has enough mass so that when it collapses the gravitational field becomes so strong that the escape velocity near it becomes faster than light. Light itself cannot escape…. A Black Hole. The distance from the star called the Event Horizon is where escape velocit ...
WebQuest-The-Life-Cycle-of-Stars-1
WebQuest-The-Life-Cycle-of-Stars-1

... http://www.seasky.org/cosmic/sky7a01.html and answer the following questions: 1. Stars begin their lives as clouds of dust and gas called. 2. What is a protostar? ...
Star Lifecycle
Star Lifecycle

... nuclear fusion starts If a star doesn’t have enough mass to start nuclear fusion, it becomes a brown dwarf. ...
The Life Cycle of Stars Webquest
The Life Cycle of Stars Webquest

... inside a star, such as our sun, convert hydrogen into helium by means of a process known as. 2. What gives a star its energy? 3. How many protons does a standard hydrogen atom have in its nucleus? ...
Stars - RSM Home
Stars - RSM Home

Almach or Alberio
Almach or Alberio

... the light you could see from this gem tonight left the stars about 120 years before our country was born! Let's compare these figures with the data for the more familiar Alberio (Beta Cygnus). Alberio is slightly more distant at about 380 light years away. Golden-hued Albireo's A (itself a binary) h ...
Recap: High Mass Stars
Recap: High Mass Stars

... \FUSION begins • Continued FUSION is necessary for stars to survive. • Can take 30,000,000 years for protostar to form ...
Stars_and_Galaxies
Stars_and_Galaxies

... Large stars go out with a bang called a supernova. What is left after the supernova is much more dense than a white dwarf, called a neutron star. Some remains of a supernova are so dense, they become black ...
Study Guide – Midterm 3
Study Guide – Midterm 3

... field. • “Precession” (gradual change in direction of major axis) of orbit of ...
1.1 Organization of the Universe
1.1 Organization of the Universe

...  What is the dependent variable?  What is one constant? Write in complete sentences! Don’t talk during the Catalyst! ...
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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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