Astronomy Unit Test – Chapter 21
... 25. Predict what will happen when the sun runs out of fuel. 26. What is used to classify stars? 27. At which phase of the moon could a solar eclipse occur? 28. A star is twice as massive as the sun. How will its lifespan compare with the sun? 29. Some astronomers discover a galaxy that contains only ...
... 25. Predict what will happen when the sun runs out of fuel. 26. What is used to classify stars? 27. At which phase of the moon could a solar eclipse occur? 28. A star is twice as massive as the sun. How will its lifespan compare with the sun? 29. Some astronomers discover a galaxy that contains only ...
Answers to Coursebook questions – Chapter E2
... Light emitted from the star will have to pass through the outer layers of the star. Atoms in these layers may absorb light of certain wavelengths if these wavelengths correspond to energy differences in the atomic energy levels. The absorbed photons will therefore not make it through the outer layer ...
... Light emitted from the star will have to pass through the outer layers of the star. Atoms in these layers may absorb light of certain wavelengths if these wavelengths correspond to energy differences in the atomic energy levels. The absorbed photons will therefore not make it through the outer layer ...
File
... The life of a massive star doesn’t stop at a supernova. Some matter of the star may remain after the explosion. Depending on the mass of the star, having high mass, or very high mass, the remains can become one of two space features. A black hole or a neutron star. ...
... The life of a massive star doesn’t stop at a supernova. Some matter of the star may remain after the explosion. Depending on the mass of the star, having high mass, or very high mass, the remains can become one of two space features. A black hole or a neutron star. ...
Star and Sun Properties
... Day 1: What Are Stars? A star is a large celestial body that is composed of hot gas and that emits light; the sun is a typical star • The Sun, our closest star, is 93 million miles from Earth. • The next closest star is 4.3 lighter years away. • By mass, the Sun is 71 % Hydrogen, 27% helium and t ...
... Day 1: What Are Stars? A star is a large celestial body that is composed of hot gas and that emits light; the sun is a typical star • The Sun, our closest star, is 93 million miles from Earth. • The next closest star is 4.3 lighter years away. • By mass, the Sun is 71 % Hydrogen, 27% helium and t ...
Note Taking Guide #2: Characteristics of Stars Welcome back! As
... A star’s apparent magnitude is how much light a star appears to give off when viewed from Earth. The closer a star is to Erath, the more light it appears to give off. Think of our sun versus Alpha Centauri; the sun appears to give off much more light, even though the two stars are actually very simi ...
... A star’s apparent magnitude is how much light a star appears to give off when viewed from Earth. The closer a star is to Erath, the more light it appears to give off. Think of our sun versus Alpha Centauri; the sun appears to give off much more light, even though the two stars are actually very simi ...
etlife_douglas_ewart_short
... gas giants, much bigger and closer to their parent star than the Earth is to the Sun. ...
... gas giants, much bigger and closer to their parent star than the Earth is to the Sun. ...
lecture12
... For historical reasons, astronomers classify the temperatures of stars on a scale defined by spectral types, called O B A F G K M, ranging from the hottest (type O) to the coolest (type M) stars. ...
... For historical reasons, astronomers classify the temperatures of stars on a scale defined by spectral types, called O B A F G K M, ranging from the hottest (type O) to the coolest (type M) stars. ...
The Hertzsprung-Russell Diagram
... – Most stars fall in the region called main sequence. – Curved line sloping from top left to lower right of HR diagram. ...
... – Most stars fall in the region called main sequence. – Curved line sloping from top left to lower right of HR diagram. ...
Prep Homework Solutions for HW due 10/04/10
... the red giant in Algol used to be the more massive star, and it evolved off the Main Sequence before its companion, but then it lost significant mass through mass transfer to the companion, so the more massive star is the less massive star now. Note: a couple of you suggested that the paradox could ...
... the red giant in Algol used to be the more massive star, and it evolved off the Main Sequence before its companion, but then it lost significant mass through mass transfer to the companion, so the more massive star is the less massive star now. Note: a couple of you suggested that the paradox could ...
STARS - AN INTRODUCTION
... The Sun is a medium sized star. It is bigger than all eight planets combined! However, there are stars a lot bigger than the Sun! The largest stars are called ...
... The Sun is a medium sized star. It is bigger than all eight planets combined! However, there are stars a lot bigger than the Sun! The largest stars are called ...
Measuring the Stars
... Space is Big. “Space is big. Really big. You just won't believe how vastly hugely mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist, but that's just peanuts to space…” To be fair though, when confronted by the sheer enormity of the distances between the s ...
... Space is Big. “Space is big. Really big. You just won't believe how vastly hugely mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist, but that's just peanuts to space…” To be fair though, when confronted by the sheer enormity of the distances between the s ...
1. Neutron stars 2. Black holes
... Novae and supernovae are two different types of beasts. A nova is an increase in the brightness of an accreting white dwarf star that is undergoing a surface explosion. The temporary and rapid change in luminosity can occur over a period of a few days. On the average, 2 or 3 novae are observed ...
... Novae and supernovae are two different types of beasts. A nova is an increase in the brightness of an accreting white dwarf star that is undergoing a surface explosion. The temporary and rapid change in luminosity can occur over a period of a few days. On the average, 2 or 3 novae are observed ...
life cycle of stars notes
... • Hotter core causes star to expand up to 100x original size due to ‘radiative pressure’ • Surface temp gets cooler – star becomes red • Core becomes “degenerate” - can’t be crushed ...
... • Hotter core causes star to expand up to 100x original size due to ‘radiative pressure’ • Surface temp gets cooler – star becomes red • Core becomes “degenerate” - can’t be crushed ...
Chapter 15 Stars, Galaxies
... but still high-mass stars become neutron stars. f. They all start out as a part of nebulas that contract to form protostars. g. Low-mass and medium-mass stars turn into red giants as they use up their fuel. They later form planetary nebulas and white dwarfs. High-mass stars turn into supergiants as ...
... but still high-mass stars become neutron stars. f. They all start out as a part of nebulas that contract to form protostars. g. Low-mass and medium-mass stars turn into red giants as they use up their fuel. They later form planetary nebulas and white dwarfs. High-mass stars turn into supergiants as ...
Astronomy Part 2 - Malvern Troop 7
... to the stars. Do this for at least four weeks and at the same time of night. On your sketch, record the date and time next to the planet's position. Use your sketch to explain how ...
... to the stars. Do this for at least four weeks and at the same time of night. On your sketch, record the date and time next to the planet's position. Use your sketch to explain how ...
Astronomy Review (Cope) 64KB Jun 09 2013 08:13:01 PM
... 18. Starting with the speed of light being 3.00 x 10 meters per second (or 300,000 km per second), calculate how far light will travel in one (365 day) year. Stars ...
... 18. Starting with the speed of light being 3.00 x 10 meters per second (or 300,000 km per second), calculate how far light will travel in one (365 day) year. Stars ...
AST 207 Homework 7 Due 4 November 2011
... 2. Mizar, the first binary star discovered from the spectrum. Even though Mizar appears to be a single star, Pickering’s spectrum showed it to be a binary star. You will need to refer to the spectrum shown in class on Oct. 28th. The speed of light is 3105 km/s. a. (3 pts.) What are the big ideas ne ...
... 2. Mizar, the first binary star discovered from the spectrum. Even though Mizar appears to be a single star, Pickering’s spectrum showed it to be a binary star. You will need to refer to the spectrum shown in class on Oct. 28th. The speed of light is 3105 km/s. a. (3 pts.) What are the big ideas ne ...
Quiz Chapter 10 Answers
... Quiz Chapter 10 Answers 10-1. Protostars are not seen in visible light telescopes because: a) they don’t emit any radiation b) they are surrounded by clouds of gas and dust X c) they only emit infrared radiation d) they are all moving away from Earth so fast that their visible light is Doppler shift ...
... Quiz Chapter 10 Answers 10-1. Protostars are not seen in visible light telescopes because: a) they don’t emit any radiation b) they are surrounded by clouds of gas and dust X c) they only emit infrared radiation d) they are all moving away from Earth so fast that their visible light is Doppler shift ...
How Bright is that Star?
... A 1st magnitude star is 100x brighter than a “6th ” Each order of magnitude is therefore 2.15 times brighter than the one below it. Magnitude is now given in decimal form. Deneb now rates a 1.26, and Betelgeuse rates .87. Hipparchus underestimated how bright the brightest were, so now we even use ne ...
... A 1st magnitude star is 100x brighter than a “6th ” Each order of magnitude is therefore 2.15 times brighter than the one below it. Magnitude is now given in decimal form. Deneb now rates a 1.26, and Betelgeuse rates .87. Hipparchus underestimated how bright the brightest were, so now we even use ne ...
Presentation for perspective graduate students 2006
... many hydrogen atoms have their electron in the n = 2 orbit: hence strong absorption ...
... many hydrogen atoms have their electron in the n = 2 orbit: hence strong absorption ...
Astronomy 1 – Winter 2011
... many hydrogen atoms have their electron in the n = 2 orbit: hence strong absorption ...
... many hydrogen atoms have their electron in the n = 2 orbit: hence strong absorption ...
Lyra
Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.