Chapter 5 Notes
... A. __________ gravity holds together a large collection of stars, gas, and dust 1. Earth galaxy is Milky Way which is part of a galaxy cluster named the ______ _____. 2. _______ _______ - spiral arms wind out from inner section; some have barred spirals with stars and gas in a central bar 3. _______ ...
... A. __________ gravity holds together a large collection of stars, gas, and dust 1. Earth galaxy is Milky Way which is part of a galaxy cluster named the ______ _____. 2. _______ _______ - spiral arms wind out from inner section; some have barred spirals with stars and gas in a central bar 3. _______ ...
astr221lect2x
... orbits Earth in 27.3 days. • Earth & Moon travel 30° around Sun during that time (30°/360° = 1/12) • Synodic month: A cycle of lunar phases; therefore takes about 29.5 days, 1/12 longer than a sidereal month ...
... orbits Earth in 27.3 days. • Earth & Moon travel 30° around Sun during that time (30°/360° = 1/12) • Synodic month: A cycle of lunar phases; therefore takes about 29.5 days, 1/12 longer than a sidereal month ...
©JSR 2010 Seeing gravity 1/2 Gravitation – if the Earth could see
... towards the galactic centre as having no effect at all on the Earth. Yet because of the huge mass of stars, even a pretty distant star does exert a force on the Earth that is quite a sensible number of Newtons. In fact more or less every star in the Milky Way galaxy exerts a force on the Earth at le ...
... towards the galactic centre as having no effect at all on the Earth. Yet because of the huge mass of stars, even a pretty distant star does exert a force on the Earth that is quite a sensible number of Newtons. In fact more or less every star in the Milky Way galaxy exerts a force on the Earth at le ...
the fixed stars - The Witches` Almanac
... while others are negative, even sinister. The fixed stars have been important since astrology’s earliest days. Fixed is something of a misnomer. The stars do move ever so slightly; however, the distance traveled over a century is barely perceptible. Alpheratz is a purplishwhite double star of the ...
... while others are negative, even sinister. The fixed stars have been important since astrology’s earliest days. Fixed is something of a misnomer. The stars do move ever so slightly; however, the distance traveled over a century is barely perceptible. Alpheratz is a purplishwhite double star of the ...
Life Histories Stars
... In this activity, you can see that the very massive stars live much shorted “lives” compared to the smaller, less massive stars. Why is that? Large stars, like all stars, form inside giant gaseous nebulae. An example of such a nebula is the Great Nebula in Orion (see photo). Inside nebulae, particle ...
... In this activity, you can see that the very massive stars live much shorted “lives” compared to the smaller, less massive stars. Why is that? Large stars, like all stars, form inside giant gaseous nebulae. An example of such a nebula is the Great Nebula in Orion (see photo). Inside nebulae, particle ...
Life Histories Of Some Stars
... In this activity, you can see that the very massive stars live much shorted “lives” compared to the smaller, less massive stars. Why is that? Large stars, like all stars, form inside giant gaseous nebulae. An example of such a nebula is the Great Nebula in Orion (see photo). Inside nebulae, particle ...
... In this activity, you can see that the very massive stars live much shorted “lives” compared to the smaller, less massive stars. Why is that? Large stars, like all stars, form inside giant gaseous nebulae. An example of such a nebula is the Great Nebula in Orion (see photo). Inside nebulae, particle ...
notes
... • Planets form within a few tens of millions of years of their star forming, and there are stars that are forming today and other stars that are ten billion years old, so unlike the planets of the Solar System, which can only be observed as they are today, studying exoplanets allows the observation ...
... • Planets form within a few tens of millions of years of their star forming, and there are stars that are forming today and other stars that are ten billion years old, so unlike the planets of the Solar System, which can only be observed as they are today, studying exoplanets allows the observation ...
Supernovae: Heavy Elements
... distinguished from one spectral class to another with the naked eye. • Main Sequence stars generally run from lower right (low temperature and luminosity) to upper left (high temperature and luminosity) • Exceptions - Secondary band of very cool, yet very luminous stars known as Giants ...
... distinguished from one spectral class to another with the naked eye. • Main Sequence stars generally run from lower right (low temperature and luminosity) to upper left (high temperature and luminosity) • Exceptions - Secondary band of very cool, yet very luminous stars known as Giants ...
Life Histories Of Some Stars
... In this activity, you can see that the very massive stars live much shorted “lives” compared to the smaller, less massive stars. Why is that? Large stars, like all stars, form inside giant gaseous nebulae. An example of such a nebula is the Great Nebula in Orion (see photo). Inside nebulae, particle ...
... In this activity, you can see that the very massive stars live much shorted “lives” compared to the smaller, less massive stars. Why is that? Large stars, like all stars, form inside giant gaseous nebulae. An example of such a nebula is the Great Nebula in Orion (see photo). Inside nebulae, particle ...
PPT - McMaster Physics and Astronomy
... Luminosity L and temperature T of a star are independent physical properties of a star. -Temperature correlates with colour of a star (hot is blue, cool is red). L varies by factor of 100 million! -Plot L of a star vs. its colour on a diagram: find that these are correlated with one another. Known a ...
... Luminosity L and temperature T of a star are independent physical properties of a star. -Temperature correlates with colour of a star (hot is blue, cool is red). L varies by factor of 100 million! -Plot L of a star vs. its colour on a diagram: find that these are correlated with one another. Known a ...
2- Origin of the Universe
... • Contain thousands of icy and rocky objects • Kuiper Belt – Neptune to about 30 to 55 AU • Oort Cloud – from 5000 AU to 100000 AU Pluto and Eris are the best known dwarf planets found in Kuiper belt Pluto was reclassified as a dwarf planet in ...
... • Contain thousands of icy and rocky objects • Kuiper Belt – Neptune to about 30 to 55 AU • Oort Cloud – from 5000 AU to 100000 AU Pluto and Eris are the best known dwarf planets found in Kuiper belt Pluto was reclassified as a dwarf planet in ...
Part B
... • Short GRB lasts few seconds. • Long GRB lasts several minutes. • Unlike X-ray bursters GRB sources only emit once in their history. • Distributed isotropically across night sky suggesting extragalactic origin. • New GRBs discovered at rate of about one per day. ...
... • Short GRB lasts few seconds. • Long GRB lasts several minutes. • Unlike X-ray bursters GRB sources only emit once in their history. • Distributed isotropically across night sky suggesting extragalactic origin. • New GRBs discovered at rate of about one per day. ...
Chapter 8 - TeacherWeb
... A star life cycle: first stage: it is a ball of gas and dust. Gravity pulls the dust and gas together into a sphere. As the sphere becomes denser it becomes hotter. Hydrogen changes to helium by a process called nuclear fusion. When a star dies its materials return to space---sometimes to form new s ...
... A star life cycle: first stage: it is a ball of gas and dust. Gravity pulls the dust and gas together into a sphere. As the sphere becomes denser it becomes hotter. Hydrogen changes to helium by a process called nuclear fusion. When a star dies its materials return to space---sometimes to form new s ...
Types of Planets and Stars
... universe. Earth’s sun is a main sequence star. These stars vary in size, mass, and brightness, but they all convert hydrogen into helium, also known as nuclear fusion. While our sun will spend 10 billion on its main sequence, a star ten times as massive will stick around for only 20 million years. ...
... universe. Earth’s sun is a main sequence star. These stars vary in size, mass, and brightness, but they all convert hydrogen into helium, also known as nuclear fusion. While our sun will spend 10 billion on its main sequence, a star ten times as massive will stick around for only 20 million years. ...
Assignment 8 - utoledo.edu
... b. returns to the position on the HR diagram that the star had in its mainsequence stage c. increases tremendously in luminosity d. is able to fuse many of the heaviest elements (such as iron and gold) in its superhot core e. none of the above ...
... b. returns to the position on the HR diagram that the star had in its mainsequence stage c. increases tremendously in luminosity d. is able to fuse many of the heaviest elements (such as iron and gold) in its superhot core e. none of the above ...
AST301.Ch22.NeutGammBH - University of Texas Astronomy
... to vary periodically planet in orbit around pulsar. Pulses arise earlier and later, depending on what part of the orbit the pulsar is in. Now evidence for three planets orbiting this pulsar, with masses like that of the Earth! But almost certainly not primordial (because planet would be destroyed ...
... to vary periodically planet in orbit around pulsar. Pulses arise earlier and later, depending on what part of the orbit the pulsar is in. Now evidence for three planets orbiting this pulsar, with masses like that of the Earth! But almost certainly not primordial (because planet would be destroyed ...
Review Questions for Exam #2
... In order to figure out the mass of a star we observe binary star systems and use Kepler’s 3rd Law, (M1 + M2) P2 = 4π2*a3/G Discuss how we determine, P and a. How do we solve for individual mass (like M1) rather than (M1 + M2)? ...
... In order to figure out the mass of a star we observe binary star systems and use Kepler’s 3rd Law, (M1 + M2) P2 = 4π2*a3/G Discuss how we determine, P and a. How do we solve for individual mass (like M1) rather than (M1 + M2)? ...
The Study of the Universe
... 4. If the moon does not produce its own light, how are we able to see it? 5. Explain the terms terrestrial planets and gas giants and providing examples of each. 6. Why is the sun so important for life on Earth? 7. Draw and label a diagram of the different layers of the Sun. 8. What range of tempera ...
... 4. If the moon does not produce its own light, how are we able to see it? 5. Explain the terms terrestrial planets and gas giants and providing examples of each. 6. Why is the sun so important for life on Earth? 7. Draw and label a diagram of the different layers of the Sun. 8. What range of tempera ...
(1) Why is the Pleiades star cluster visible all night around
... desktop activity, students can “act out” each problem’s situation in the classroom, by having one student represent the Sun, another the Earth, and others the five other planets. Be sure to have all students take a turn at representing the Earth. That student will do more than just stand in place, b ...
... desktop activity, students can “act out” each problem’s situation in the classroom, by having one student represent the Sun, another the Earth, and others the five other planets. Be sure to have all students take a turn at representing the Earth. That student will do more than just stand in place, b ...
The Stars and the Solar System
... Why are some constellations observed during some seasons, but not during other seasons? ...
... Why are some constellations observed during some seasons, but not during other seasons? ...
The Stars and the Solar System
... Why are some constellations observed during some seasons, but not during other seasons? ...
... Why are some constellations observed during some seasons, but not during other seasons? ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.