cosmological horizon
... Hubble’s Law implies that most galaxies are moving away from us and, the farther away they are, the faster they are moving away from us ...
... Hubble’s Law implies that most galaxies are moving away from us and, the farther away they are, the faster they are moving away from us ...
powerpoint file
... The crust of a neutron star is solid. Its highest mountains are only millimeters high. Why? The surface gravity is so high that a 150 pound person would weigh a million tons. You would be squeezed flatter than a piece of paper. The fastest pulsar known has a period of 0.0014 s. The star spins 642 ti ...
... The crust of a neutron star is solid. Its highest mountains are only millimeters high. Why? The surface gravity is so high that a 150 pound person would weigh a million tons. You would be squeezed flatter than a piece of paper. The fastest pulsar known has a period of 0.0014 s. The star spins 642 ti ...
Unit 1
... 14. As we look around the sky at night, we can distinguish about 6,000 individual stars with our eyes. Many of these stars are close together in the sky and cultures all over the world have connected the dots to draw figures from them, much like seeing figures in passing clouds. We call these tradit ...
... 14. As we look around the sky at night, we can distinguish about 6,000 individual stars with our eyes. Many of these stars are close together in the sky and cultures all over the world have connected the dots to draw figures from them, much like seeing figures in passing clouds. We call these tradit ...
Image Credit: NASA,ESA, HEIC, Hubble
... Life-story of a Sun-like Star, Stage 1: Formation from a molecular cloud/solar nebula Stage 4 Stage 1 ...
... Life-story of a Sun-like Star, Stage 1: Formation from a molecular cloud/solar nebula Stage 4 Stage 1 ...
HR diagram
... This diagram is a plot of stellar brightness (luminosity) versus stellar color (temperature). Brightness (luminosity) is plotted along the Y-axis; color (temperature) along the X-axis. The diagram is named for the two astronomers who created the first version around 1912, uncovering fundamental rela ...
... This diagram is a plot of stellar brightness (luminosity) versus stellar color (temperature). Brightness (luminosity) is plotted along the Y-axis; color (temperature) along the X-axis. The diagram is named for the two astronomers who created the first version around 1912, uncovering fundamental rela ...
color-stellar mass diagram
... redshift, we see cosmic epochs of vigorous star formation portion of the Hubble Deep Field galaxies appear more irregular than present day galaxies we see them through the light emitted in UV by the young stars but in UV also nearby galaxies appear less regular ...
... redshift, we see cosmic epochs of vigorous star formation portion of the Hubble Deep Field galaxies appear more irregular than present day galaxies we see them through the light emitted in UV by the young stars but in UV also nearby galaxies appear less regular ...
April 2005
... positive “fingerprints” of its chemical elements! 2. A cool, thin gas absorbs certain wavelengths from a continuous spectrum dark absorption ( “Fraunhofer”) lines in continuous spectrum: negative “fingerprints” of its chemical elements, precisely at the same wavelengths as emission lines. ...
... positive “fingerprints” of its chemical elements! 2. A cool, thin gas absorbs certain wavelengths from a continuous spectrum dark absorption ( “Fraunhofer”) lines in continuous spectrum: negative “fingerprints” of its chemical elements, precisely at the same wavelengths as emission lines. ...
Red Shift, Blue Shift
... closer to Earth than the previous wave. To an observer on Earth, the distance between wave crests will be smaller than if the star were at rest relative to Earth. The observer would see light that has a shorter wavelength than it had when it was emitted. In this example, the light has shifted toward ...
... closer to Earth than the previous wave. To an observer on Earth, the distance between wave crests will be smaller than if the star were at rest relative to Earth. The observer would see light that has a shorter wavelength than it had when it was emitted. In this example, the light has shifted toward ...
Earth Moon Sun System
... • The moon takes about one month to orbit the Earth • When the Earth-Moon system is viewed from above (looking down at the North Pole on Earth) the Moon orbits in a counter clockwise fashion. • Like Earth’s orbit around the Sun, the Moon orbit around Earth is elliptical, which causes variations in t ...
... • The moon takes about one month to orbit the Earth • When the Earth-Moon system is viewed from above (looking down at the North Pole on Earth) the Moon orbits in a counter clockwise fashion. • Like Earth’s orbit around the Sun, the Moon orbit around Earth is elliptical, which causes variations in t ...
The Size and Structure of the Milky Way Galaxy
... Dark Matter: A Major Problem for Contemporary Physics and Astronomy • Stars are a small fraction of the mass of major galaxies • The dark matter problem becomes more pronounced as you go out in the universe • The form of the dark matter is unknown; probably not what you studied in chemistry • Possi ...
... Dark Matter: A Major Problem for Contemporary Physics and Astronomy • Stars are a small fraction of the mass of major galaxies • The dark matter problem becomes more pronounced as you go out in the universe • The form of the dark matter is unknown; probably not what you studied in chemistry • Possi ...
Introduction to the Celestial Sphere
... The model of the celestial sphere is quite useful to us. It can readily be used to explain some of the motions of objects in the sky. For instance, the first time exposure above and to the left shows the sky over the course of several hours. The stars appear to move with a circular motion around a p ...
... The model of the celestial sphere is quite useful to us. It can readily be used to explain some of the motions of objects in the sky. For instance, the first time exposure above and to the left shows the sky over the course of several hours. The stars appear to move with a circular motion around a p ...
HR Diagram, Star Clusters, and Stellar Evolution
... surface (akin to the Sun's solar wind, but much stronger), and, in the course of the star's RG life, carries away most of the H envelope • During the final shedding of its envelope, when the mass loss is the greatest, the star becomes unstable and pulsates, with periods ~ few months to > 1 yr. Such ...
... surface (akin to the Sun's solar wind, but much stronger), and, in the course of the star's RG life, carries away most of the H envelope • During the final shedding of its envelope, when the mass loss is the greatest, the star becomes unstable and pulsates, with periods ~ few months to > 1 yr. Such ...
star chart - Ontario Science Centre
... Moon will only be 356,896km away from the Earth AUG 12 Perseid meteor shower peaks; Unfortunately, the Moon will be bright and high in the sky AUG 18 * Conjunction between Venus and Jupiter; These two planets will look like they are very close to each other in the early morning sky AUG 18 * Waxing M ...
... Moon will only be 356,896km away from the Earth AUG 12 Perseid meteor shower peaks; Unfortunately, the Moon will be bright and high in the sky AUG 18 * Conjunction between Venus and Jupiter; These two planets will look like they are very close to each other in the early morning sky AUG 18 * Waxing M ...
Earth in the Universe Answer each in your binder or notebook. Date
... Scientists measured the patterns of spectral lines given off by distant galaxies and concluded that almost all of these galaxies are moving away from Earth. What did the scientists observe directly? A. a shift toward longer wavelengths of light B. a shift toward shorter wavelengths of light C. the a ...
... Scientists measured the patterns of spectral lines given off by distant galaxies and concluded that almost all of these galaxies are moving away from Earth. What did the scientists observe directly? A. a shift toward longer wavelengths of light B. a shift toward shorter wavelengths of light C. the a ...
Answer
... 1. Describe how the Luminosity of this star changes with time. Luminosity remains constant at about 1 Lsun until about 10,000 Myr when it suddenly (and briefly) increases to over 4500 Lsun. 2. Describe how the radius of this star changes with time. Radius remains constant at about 1 Rsun until about ...
... 1. Describe how the Luminosity of this star changes with time. Luminosity remains constant at about 1 Lsun until about 10,000 Myr when it suddenly (and briefly) increases to over 4500 Lsun. 2. Describe how the radius of this star changes with time. Radius remains constant at about 1 Rsun until about ...
File
... What are the basic Earth motions? What are the apparent celestial motions associated with Earth’s rotation? What are Star Trails? What is the apparent hourly rate of motion of the stars? How do star trails change with direction? How is Polaris different from other stars? What is specia ...
... What are the basic Earth motions? What are the apparent celestial motions associated with Earth’s rotation? What are Star Trails? What is the apparent hourly rate of motion of the stars? How do star trails change with direction? How is Polaris different from other stars? What is specia ...
Astronomy Final C - Tarleton State University
... cooled enough where atoms could be stable 18. ? Geometry is “closed” geometry. A.Euclidean B.Spherical C.Hyperbolic D.all of these are “closed” geometries 19. Which of the following astronomical bodies would be least likely to have/had life forms? A.Enceladus B.Europa C.Titan D.Mars E.Io 20. ? devel ...
... cooled enough where atoms could be stable 18. ? Geometry is “closed” geometry. A.Euclidean B.Spherical C.Hyperbolic D.all of these are “closed” geometries 19. Which of the following astronomical bodies would be least likely to have/had life forms? A.Enceladus B.Europa C.Titan D.Mars E.Io 20. ? devel ...
Navigating by the Stars
... The orbits of the planets are ellipses with the Sun at one of the foci. This is now called Kepler's First Law or The Law of Ellipses. What is an ellipse? Glad you asked. An ellipse is a closed, curved shape that is defined by two foci. An ellipse is a like a flattened circle. In fact, if both of th ...
... The orbits of the planets are ellipses with the Sun at one of the foci. This is now called Kepler's First Law or The Law of Ellipses. What is an ellipse? Glad you asked. An ellipse is a closed, curved shape that is defined by two foci. An ellipse is a like a flattened circle. In fact, if both of th ...
File
... 5)Planet – a celestial body that orbits one or more stars. It is large enough that its own gravity holds it in a spherical shape and is the only body occupying it’s orbital path. Planets in our galaxy were named after Roman Gods (Mercury, Venus, mars, Jupiter and Saturn). As the planets revolve arou ...
... 5)Planet – a celestial body that orbits one or more stars. It is large enough that its own gravity holds it in a spherical shape and is the only body occupying it’s orbital path. Planets in our galaxy were named after Roman Gods (Mercury, Venus, mars, Jupiter and Saturn). As the planets revolve arou ...
finding masses of extrasolar planets
... Each of the various techniques for finding extrasolar planets also provides extra information about the planets and their stars. For example, the Doppler technique gives us information about the star’s velocity toward or away from us, and from this we can find it’s mass. It is possible to calculate ...
... Each of the various techniques for finding extrasolar planets also provides extra information about the planets and their stars. For example, the Doppler technique gives us information about the star’s velocity toward or away from us, and from this we can find it’s mass. It is possible to calculate ...
8Oct_2014
... be seen as rolling “downhill” towards them • If the mass is large enough, space can be so warped that objects entering it can never leave – a black hole is formed. ...
... be seen as rolling “downhill” towards them • If the mass is large enough, space can be so warped that objects entering it can never leave – a black hole is formed. ...
Earth Rotation and Revolution
... of objects moving over the surface due to Earth’s rotation • The deflection is to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. • This deflection occurs because Earth’s surface is rotating with respect to the objects. ...
... of objects moving over the surface due to Earth’s rotation • The deflection is to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. • This deflection occurs because Earth’s surface is rotating with respect to the objects. ...
Standard candles
... Measuring distance using standard candles For distances which are too large to measure using parallax, astronomers use 'standard candles'. Light sources which are further away appear fainter because the light is spread out over a greater area. If we know how luminous a source really is, then we can ...
... Measuring distance using standard candles For distances which are too large to measure using parallax, astronomers use 'standard candles'. Light sources which are further away appear fainter because the light is spread out over a greater area. If we know how luminous a source really is, then we can ...
Rotation & Revolution
... of objects moving over the surface due to Earth’s rotation • The deflection is to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. • This deflection occurs because Earth’s surface is rotating with respect to the objects. ...
... of objects moving over the surface due to Earth’s rotation • The deflection is to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. • This deflection occurs because Earth’s surface is rotating with respect to the objects. ...
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.