Solar Nebula Theory
... Basic properties of the Solar System that need to be explained: 1. All planets orbit the Sun in the same direction as the Sun’s rotation 2. All planetary orbits are confined to the same general plane 3. Terrestrial planets form near the Sun, Jovian planets further out ...
... Basic properties of the Solar System that need to be explained: 1. All planets orbit the Sun in the same direction as the Sun’s rotation 2. All planetary orbits are confined to the same general plane 3. Terrestrial planets form near the Sun, Jovian planets further out ...
Stars: the Hertzsprung
... star with a given mass and chemical composition – if we start with a just formed protostar of a given mass and chemical composition, we can calculate how that star will evolve over its entire life. • This is extremely useful because it greatly simplifies the study of stars and is the basic reason wh ...
... star with a given mass and chemical composition – if we start with a just formed protostar of a given mass and chemical composition, we can calculate how that star will evolve over its entire life. • This is extremely useful because it greatly simplifies the study of stars and is the basic reason wh ...
Measuring stars Part I
... Using the weird equation, the distance to deneb can be calculated: 2500 light years (M – m = 5 – 5log(d)) One last obvious question: How did we ever know the Absolute visual magnitude to Deneb without knowing its distance in the ...
... Using the weird equation, the distance to deneb can be calculated: 2500 light years (M – m = 5 – 5log(d)) One last obvious question: How did we ever know the Absolute visual magnitude to Deneb without knowing its distance in the ...
Group competition
... Circumpolar stars describe a full circle around the Celestial Pole over 24 hours. This can be used to make a simple clock. You are given a blank card with a movable ring, along with a clear strip with a centre circle. If the card has a suitable scale, the clear strip is attached as in the diagram b ...
... Circumpolar stars describe a full circle around the Celestial Pole over 24 hours. This can be used to make a simple clock. You are given a blank card with a movable ring, along with a clear strip with a centre circle. If the card has a suitable scale, the clear strip is attached as in the diagram b ...
Answers to pupils` worksheets
... 8. What happens to your pupil when the light goes dimmer? It gets bigger An extension question you could ask at this point: How does your pupil getting bigger in dim light explain why the Lovell telescope at Jodrell Bank needs to be so big? You pupil gets bigger to collect more light, so you can see ...
... 8. What happens to your pupil when the light goes dimmer? It gets bigger An extension question you could ask at this point: How does your pupil getting bigger in dim light explain why the Lovell telescope at Jodrell Bank needs to be so big? You pupil gets bigger to collect more light, so you can see ...
What is a pulsar planet ? How do planets form ?
... • A massive star having planets explodes and becomes a pulsar with planets. • Explosion energy is injected from supernovae to planets. If the star has a jupiter-like planet, about 1046 erg is injected to the planet. This energy is enough to strip the atmosphere from the planet. Therefore only a core ...
... • A massive star having planets explodes and becomes a pulsar with planets. • Explosion energy is injected from supernovae to planets. If the star has a jupiter-like planet, about 1046 erg is injected to the planet. This energy is enough to strip the atmosphere from the planet. Therefore only a core ...
Slide 1 - Typepad
... regions simply because the Milky Way runs through it. 3 Open clusters in/out of pentagon of Constellation Auriga south of Capella. M37 the richest cluster containing over 500 stars spread across 20 arcminutes and is the brightest of the three with an apparent magnitude +5.6. M36 - 60 stars with an a ...
... regions simply because the Milky Way runs through it. 3 Open clusters in/out of pentagon of Constellation Auriga south of Capella. M37 the richest cluster containing over 500 stars spread across 20 arcminutes and is the brightest of the three with an apparent magnitude +5.6. M36 - 60 stars with an a ...
Chapter 28 Stars and Galaxies Reading Guide
... 15. The Sun has an apparent magnitude of –26.7. A friend tells you about a star that also has a magnitude of –26.7. How could this be true? The friend can be referring to absolute magnitude and not apparent magnitude ...
... 15. The Sun has an apparent magnitude of –26.7. A friend tells you about a star that also has a magnitude of –26.7. How could this be true? The friend can be referring to absolute magnitude and not apparent magnitude ...
File - Awakening in Grade 6
... one night. Since it takes 24 hours for one rotation, each quarter turn would take 6 hours. ...
... one night. Since it takes 24 hours for one rotation, each quarter turn would take 6 hours. ...
Red Giants
... for fusion to start. The fusion in the layer just outside the core is called shell burning. This fusion is very rapid because the shell layer is still compressing and increasing in temperature. The luminosity of the star increases from its main sequence value. The gas envelope surrounding the core p ...
... for fusion to start. The fusion in the layer just outside the core is called shell burning. This fusion is very rapid because the shell layer is still compressing and increasing in temperature. The luminosity of the star increases from its main sequence value. The gas envelope surrounding the core p ...
The winter sky over Bosham
... In the southeast sky in the early evening is the hourglass shape of Orion, the hunter, one of the most recognisable constellations in the night sky. Unlike most constellations, which are mostly random groupings of stars that happen to appear together in the sky, the stars of Orion are almost all rel ...
... In the southeast sky in the early evening is the hourglass shape of Orion, the hunter, one of the most recognisable constellations in the night sky. Unlike most constellations, which are mostly random groupings of stars that happen to appear together in the sky, the stars of Orion are almost all rel ...
on his death bed. Retrograde Motion The heliocentric
... mathematician by Rudolph II and was able to transfer Brahe's extremely accurate observations into the planetary laws of motion which bear his name. Kepler was an extremely religious man and deeply troubled in his personal life but this did not stop him from his great discoveries of planetary motion ...
... mathematician by Rudolph II and was able to transfer Brahe's extremely accurate observations into the planetary laws of motion which bear his name. Kepler was an extremely religious man and deeply troubled in his personal life but this did not stop him from his great discoveries of planetary motion ...
DR 19.2 - Cobb Learning
... ______ 26. Which one of the following statements is NOT true of supernovas? a. They are explosions in which a massive star collapses. b. They are explosions that occur at the beginning of a star’s life. c. They can be brighter than an entire galaxy for several days. d. They are explosions in which a ...
... ______ 26. Which one of the following statements is NOT true of supernovas? a. They are explosions in which a massive star collapses. b. They are explosions that occur at the beginning of a star’s life. c. They can be brighter than an entire galaxy for several days. d. They are explosions in which a ...
PHYSICS 1500 - ASTRONOMY TOTAL: 100 marks Section A Please
... The critical density of the Universe is (a) the minimum density of baryonic matter the Universe may have if it is open and infinite. (b) the maximum density of baryonic matter the Universe may have if it is open and infinite. (c) the minimum density of baryonic matter the Universe may have to allow ...
... The critical density of the Universe is (a) the minimum density of baryonic matter the Universe may have if it is open and infinite. (b) the maximum density of baryonic matter the Universe may have if it is open and infinite. (c) the minimum density of baryonic matter the Universe may have to allow ...
Astronomy 242: Review Questions #1 Distributed: February 10
... criteria used classify galaxies. How do key properties like ISM makeup and star formation change along the Hubble sequence? 14. Two years ago, an undergraduate class at University College London discovered Supernova 2014J in the nearby spiral galaxy M82 (Fig. 4). This type of supernova results from ...
... criteria used classify galaxies. How do key properties like ISM makeup and star formation change along the Hubble sequence? 14. Two years ago, an undergraduate class at University College London discovered Supernova 2014J in the nearby spiral galaxy M82 (Fig. 4). This type of supernova results from ...
Direct Detection of Exoplanets
... Even if we can image an Earth-like planet in the habitable zone of some star, we will not be able to resolve its surface features in the foreseeable future. (No “zooming in” to see oceans, forests, city lights… Later we’ll see how you can detect some of these through reflected light.) Instead, we mu ...
... Even if we can image an Earth-like planet in the habitable zone of some star, we will not be able to resolve its surface features in the foreseeable future. (No “zooming in” to see oceans, forests, city lights… Later we’ll see how you can detect some of these through reflected light.) Instead, we mu ...
Properties of Stars - Mr. Carter`s Earth
... The Hertzsprung-Russell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were all the same distance away. Rather than speak of the brightness of ...
... The Hertzsprung-Russell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were all the same distance away. Rather than speak of the brightness of ...
Kepler`s Law - New Mexico Tech
... The Sun’s Lifecycle • The Sun was formed about 4.57 billion years ago when a hydrogen molecular cloud collapsed. • It is about halfway through its main-sequence evolution, during this time, nuclear fusion reactions in its core fuse hydrogen into helium. • It will spend approx. 10 billion years as a ...
... The Sun’s Lifecycle • The Sun was formed about 4.57 billion years ago when a hydrogen molecular cloud collapsed. • It is about halfway through its main-sequence evolution, during this time, nuclear fusion reactions in its core fuse hydrogen into helium. • It will spend approx. 10 billion years as a ...
Great Migrations & other natural history tales
... way M_Jeans changes w.r.t. the fragment mass, Hoyle (1953) arrived at a concept of opacity-limited fragmentation. When heat gets trapped by opacity, Jeans mass ...
... way M_Jeans changes w.r.t. the fragment mass, Hoyle (1953) arrived at a concept of opacity-limited fragmentation. When heat gets trapped by opacity, Jeans mass ...
Stellar Evolution (Formation)
... Radiate away stored heat. Slowly approach 0 K. If M > 1.4Msun, gravity will exceed the pressure of the degenerate electrons and the white dwarf will collapse. ...
... Radiate away stored heat. Slowly approach 0 K. If M > 1.4Msun, gravity will exceed the pressure of the degenerate electrons and the white dwarf will collapse. ...
Solar System from Web
... The Sun’s Lifecycle • The Sun was formed about 4.57 billion years ago when a hydrogen molecular cloud collapsed. • It is about halfway through its main-sequence evolution, during this time, nuclear fusion reactions in its core fuse hydrogen into helium. • It will spend approx. 10 billion years as a ...
... The Sun’s Lifecycle • The Sun was formed about 4.57 billion years ago when a hydrogen molecular cloud collapsed. • It is about halfway through its main-sequence evolution, during this time, nuclear fusion reactions in its core fuse hydrogen into helium. • It will spend approx. 10 billion years as a ...