Viewing the Universe
... • ________________ - event that began the universe—NOT an explosion—__________________________________ ...
... • ________________ - event that began the universe—NOT an explosion—__________________________________ ...
Lecture 1
... Size and Time Scales of the Universe Physical scale: What does the solar system look like? How far away are the stars? How big is our Milky Way? How does it compare to other galaxies? How far away are galaxies? Time scale: How much time do we live? how much time do stars live? how old is the univers ...
... Size and Time Scales of the Universe Physical scale: What does the solar system look like? How far away are the stars? How big is our Milky Way? How does it compare to other galaxies? How far away are galaxies? Time scale: How much time do we live? how much time do stars live? how old is the univers ...
Earth Science, 10th edition Chapter 23: Beyond Our Solar System I
... 1. Small (some no larger than Earth) 2. Dense a. Can be more massive than the Sun b. Spoonful weighs several tons c. Atoms take up less space 1. Electrons displaced inward 2. Called degenerate matter 3. Hot surface 4. Cools to become a black dwarf B. Neutron star 1. Forms from a more massive star a. ...
... 1. Small (some no larger than Earth) 2. Dense a. Can be more massive than the Sun b. Spoonful weighs several tons c. Atoms take up less space 1. Electrons displaced inward 2. Called degenerate matter 3. Hot surface 4. Cools to become a black dwarf B. Neutron star 1. Forms from a more massive star a. ...
Lecture 38. The Fermi Paradox, Von Neumann Machines, Galactic
... -life originated early on Earth, is easy to evolve -only a matter of time before intelligence arises -the vastness of the universe 100 billion stars in the Milky Way galaxy 100 billion galaxies in the universe -the tremendous age of the universe Then: -expect to have a large number of civilizations. ...
... -life originated early on Earth, is easy to evolve -only a matter of time before intelligence arises -the vastness of the universe 100 billion stars in the Milky Way galaxy 100 billion galaxies in the universe -the tremendous age of the universe Then: -expect to have a large number of civilizations. ...
NASA`s X-ray Eye on the Universe
... • Properties determine their effects on their surroundings • Spinning BH has a smaller “size” (event horizon is closer in) ...
... • Properties determine their effects on their surroundings • Spinning BH has a smaller “size” (event horizon is closer in) ...
COSMOLOGY 1 An Introduction to the Universe
... is often found. While only 10 miles or so across, the tightly packed neutrons in such a star contain more mass than the entire Sun. The result of the final implosion is an unimaginably compacted core: atoms would be crushed together with their electrons squeezed into the nucleus, forming neutrons an ...
... is often found. While only 10 miles or so across, the tightly packed neutrons in such a star contain more mass than the entire Sun. The result of the final implosion is an unimaginably compacted core: atoms would be crushed together with their electrons squeezed into the nucleus, forming neutrons an ...
Tick Bait`s Universe Scavenger Hunt – “Going UP”
... 5. The inner planets are all made up of rock, while the outer planets are mostly just ________________________________________ . 6. True or False: The edge of our solar system stops at the orbits of Neptune and Pluto. True ...
... 5. The inner planets are all made up of rock, while the outer planets are mostly just ________________________________________ . 6. True or False: The edge of our solar system stops at the orbits of Neptune and Pluto. True ...
Dark Energy
... Dark Matter: The internal kinematics of galaxies like the Milky Way indicate more mass than we see in stars and gas. Furthermore, all measures of mass exceed the baryonic inventory. We don’t know what the dark matter is… axions, LSP…? Dark Energy: The Universe has recently entered a renewed phase of ...
... Dark Matter: The internal kinematics of galaxies like the Milky Way indicate more mass than we see in stars and gas. Furthermore, all measures of mass exceed the baryonic inventory. We don’t know what the dark matter is… axions, LSP…? Dark Energy: The Universe has recently entered a renewed phase of ...
SAMPLE TEST: Stars and Galaxies Multiple Choice Identify the letter
... 67. What type of star is shown in Figure 25-2? 68. What happens to a low-mass star when it depletes its hydrogen fuel? 69. Why do massive stars age faster than stars that are less massive? 70. Why does a red giant have a reddish appearance? 71. What is a galaxy? 72. What type of galaxy is composed m ...
... 67. What type of star is shown in Figure 25-2? 68. What happens to a low-mass star when it depletes its hydrogen fuel? 69. Why do massive stars age faster than stars that are less massive? 70. Why does a red giant have a reddish appearance? 71. What is a galaxy? 72. What type of galaxy is composed m ...
Integrative Studies 410 Our Place in the Universe
... The Missing Mass Problem • Dark Matter is dark at all wavelengths, not just visible light • The Universe as a whole consists of up to 25% of Dark Matter! Strange! • What is it? ...
... The Missing Mass Problem • Dark Matter is dark at all wavelengths, not just visible light • The Universe as a whole consists of up to 25% of Dark Matter! Strange! • What is it? ...
SpfFin - Academic Program Pages
... Neutrinos, which are very abundant even if they have very little rest mass and are very difficult to detect. Dark energy, which generates no gravitational effects and emits no radiation. Antimatter, which generates a negative gravitational effect and will be detected only if it meets matter and is a ...
... Neutrinos, which are very abundant even if they have very little rest mass and are very difficult to detect. Dark energy, which generates no gravitational effects and emits no radiation. Antimatter, which generates a negative gravitational effect and will be detected only if it meets matter and is a ...
QSOs . Continuum Radiation Energy Source
... formation - objects start small and grow by merging Brown = growing CDM “halos” ...
... formation - objects start small and grow by merging Brown = growing CDM “halos” ...
Lecture 4 - Orbits of the planets
... The ratio of volume of Jupiter to volume of solar system (inside orbit of Neptune) • Want (volume of Jupiter) / (volume of Neptune's orbit) = (4/3)π(radius of Jupiter)3 / (4/3)π(radius of Neptune’s orbit)3 = (radius of Jupiter)3 / (radius of Neptune’s orbit)3 Lecture slide gives diameters not radii ...
... The ratio of volume of Jupiter to volume of solar system (inside orbit of Neptune) • Want (volume of Jupiter) / (volume of Neptune's orbit) = (4/3)π(radius of Jupiter)3 / (4/3)π(radius of Neptune’s orbit)3 = (radius of Jupiter)3 / (radius of Neptune’s orbit)3 Lecture slide gives diameters not radii ...
stellar_explosions - UT Austin (Astronomy)
... Massive stars burn nuclear fuels up to iron (Fe). But nuclear fusion of iron does not produce energy, it uses energy. (Fig. 21.6, p. 559) This leads to loss of pressure support core collapse Temp. is so large (~10 billion K) that the gamma ray photons (Wien’s law) have huge energies and photodisin ...
... Massive stars burn nuclear fuels up to iron (Fe). But nuclear fusion of iron does not produce energy, it uses energy. (Fig. 21.6, p. 559) This leads to loss of pressure support core collapse Temp. is so large (~10 billion K) that the gamma ray photons (Wien’s law) have huge energies and photodisin ...
Supernovae – the biggest bangs since the Big Bang
... If you know the apparent brightness of a star and you know the intrinsic brightness of the star, you can determine how far away the star is. During the 1990's two groups of astronomers endeavored to discover Type Ia supernovae as far away as possible. They found some objects so far away that their ...
... If you know the apparent brightness of a star and you know the intrinsic brightness of the star, you can determine how far away the star is. During the 1990's two groups of astronomers endeavored to discover Type Ia supernovae as far away as possible. They found some objects so far away that their ...
Scientific American - September 2015
... of Hogan’s experiment. “Holometer” is also something of a pun, riffing on the name of a 16th-century precision surveying device. Hogan’s instrument, now collecting data at Fermilab, is similarly designed to measure the lay of the land with unprecedented accuracy. It consists of a laser beam that is ...
... of Hogan’s experiment. “Holometer” is also something of a pun, riffing on the name of a 16th-century precision surveying device. Hogan’s instrument, now collecting data at Fermilab, is similarly designed to measure the lay of the land with unprecedented accuracy. It consists of a laser beam that is ...
Become a Member - Department of Physics and Astronomy
... for helium. She found similar results for other stars. Payne concluded that, unlike on Earth, hydrogen and helium are the dominant elements of the Sun and stars. Henry Norris Russell strongly opposed this conclusion and convinced her to omit it from her thesis. However, currently accepted values for ...
... for helium. She found similar results for other stars. Payne concluded that, unlike on Earth, hydrogen and helium are the dominant elements of the Sun and stars. Henry Norris Russell strongly opposed this conclusion and convinced her to omit it from her thesis. However, currently accepted values for ...
wk11
... T ~ 103 to 106 K; n ~ 10-5 to 10-3 ions/cm3 • Weak degree of concentration to the plane of the Galactic disk: scale height z is a few kpc. Also seen in dense knots known as “HII regions” marking areas of intense star formation activity. HII regions tend to lie along spiral arms. • Radiation from hot ...
... T ~ 103 to 106 K; n ~ 10-5 to 10-3 ions/cm3 • Weak degree of concentration to the plane of the Galactic disk: scale height z is a few kpc. Also seen in dense knots known as “HII regions” marking areas of intense star formation activity. HII regions tend to lie along spiral arms. • Radiation from hot ...
hubble amazing universe worksheet
... 16. The gravitational field around a Black Hole is so large, that _________________ cannot even escape. 17. Most stars revolve at relatively slow speeds, but Hubble detected ones going too _______________. They must be going around a BH. 18. Hubble provided actual evidence that ______________ colli ...
... 16. The gravitational field around a Black Hole is so large, that _________________ cannot even escape. 17. Most stars revolve at relatively slow speeds, but Hubble detected ones going too _______________. They must be going around a BH. 18. Hubble provided actual evidence that ______________ colli ...
Sample Exam for Final (with correct answers)
... (e) the presence of luminous pulsars in the Virgo Cluster. 25. The objects responsible for the huge power output of quasars are (a) supergiant stars in the centers of galaxies, where the collision of matter and antimatter results in direct conversion of mass to energy. (b) supermassive white dwarfs ...
... (e) the presence of luminous pulsars in the Virgo Cluster. 25. The objects responsible for the huge power output of quasars are (a) supergiant stars in the centers of galaxies, where the collision of matter and antimatter results in direct conversion of mass to energy. (b) supermassive white dwarfs ...
WFPC2
... WFPC2 image of a spiral-shaped disk of hot gas in the core of active galaxy M87. HST measurements show the disk is rotating so rapidly it contains a massive black hole at its hub. ...
... WFPC2 image of a spiral-shaped disk of hot gas in the core of active galaxy M87. HST measurements show the disk is rotating so rapidly it contains a massive black hole at its hub. ...
S03 from fusion to all the elements.notebook
... All stars live by fusing hydrogen into _________. In the first step of the process, two hydrogen atoms deuterium fuse to form __________. In the next step, another hydrogen atom fuses with the deuterium, creating a rare isotope of helium that has two protons and one neutron in its nucleus. In the ...
... All stars live by fusing hydrogen into _________. In the first step of the process, two hydrogen atoms deuterium fuse to form __________. In the next step, another hydrogen atom fuses with the deuterium, creating a rare isotope of helium that has two protons and one neutron in its nucleus. In the ...
Chronology of the universe
The chronology of the universe describes the history and future of the universe according to Big Bang cosmology, the prevailing scientific model of how the universe developed over time from the Planck epoch, using the cosmological time parameter of comoving coordinates. The model of the universe's expansion is known as the Big Bang. As of 2015, this expansion is estimated to have begun 13.799 ± 0.021 billion years ago. It is convenient to divide the evolution of the universe so far into three phases.