Name: _ Period: _______ Date: _______ Astronomy Vocabulary To
... Apparent Magnitude-how bright a star appears to be; usually dimmed by distance and earth’s atmosphere. ...
... Apparent Magnitude-how bright a star appears to be; usually dimmed by distance and earth’s atmosphere. ...
Black Hole
... gravitational collapse of a star exploding as a supernova, whose gravitational field is so intense that no electromagnetic radiation can escape. ...
... gravitational collapse of a star exploding as a supernova, whose gravitational field is so intense that no electromagnetic radiation can escape. ...
Where is the Solar System in the Universe?
... Scientists find it hard to work with the measurements we use on earth, like kilometers and miles, because the distances are so great it is hard for us to comprehend such enormous numbers. ...
... Scientists find it hard to work with the measurements we use on earth, like kilometers and miles, because the distances are so great it is hard for us to comprehend such enormous numbers. ...
Galaxy clusters - University of Iowa Astrophysics
... • By measuring multiple images of one source, we can figure out the total mass in the lens. This provides an independent confirmation of dark matter. • A lense can act as a huge telescope. The deepest images of the most distant galaxies are obtained with clusters acting as gravitational lenses. ...
... • By measuring multiple images of one source, we can figure out the total mass in the lens. This provides an independent confirmation of dark matter. • A lense can act as a huge telescope. The deepest images of the most distant galaxies are obtained with clusters acting as gravitational lenses. ...
GCSE P1 1.5.4 Red shift
... in galaxies into a spectrum. As you already know, the wavelength of light increases across the spectrum from blue to red. Analysis of the spectra of light from stars in distant galaxies shows that the wavelengths are longer than expected (i.e. they are shifted towards the red end of the spectrum …. ...
... in galaxies into a spectrum. As you already know, the wavelength of light increases across the spectrum from blue to red. Analysis of the spectra of light from stars in distant galaxies shows that the wavelengths are longer than expected (i.e. they are shifted towards the red end of the spectrum …. ...
Astronomy Campus Assessment
... the same energy B. λ represents the distance between two wave peaks, therefore wave 3 has the most energy C. λ represents the distance between the top of a wave and the middle of a wave, therefore they all have the same ...
... the same energy B. λ represents the distance between two wave peaks, therefore wave 3 has the most energy C. λ represents the distance between the top of a wave and the middle of a wave, therefore they all have the same ...
A time travel of 14 billion years
... • There are other radiations in the cosmos, big bang’s remainders that we are not (yet) able to detect: -The background neutrinos that provide a picture of the universe a second after its birth. - The gravitational waves that provide a picture of the universe at 10-43 seconds after the Big Bang. ...
... • There are other radiations in the cosmos, big bang’s remainders that we are not (yet) able to detect: -The background neutrinos that provide a picture of the universe a second after its birth. - The gravitational waves that provide a picture of the universe at 10-43 seconds after the Big Bang. ...
The Universe and Galaxies - West Jefferson Local Schools
... B. Milky Way galaxy - the galaxy we live in - consists of stars, and, clouds of dust and gas between stars (interstellar matter) - all the stars we see at night are in the Milky Way galaxy (about 400 billion stars) ...
... B. Milky Way galaxy - the galaxy we live in - consists of stars, and, clouds of dust and gas between stars (interstellar matter) - all the stars we see at night are in the Milky Way galaxy (about 400 billion stars) ...
The Big Bang
... curve outward. Most new stars are found in the arms. Elliptical – A round flattened ball. Contains mostly old stars. Irregular – No certain shape. Contain many bright young stars and much dust and gas. ...
... curve outward. Most new stars are found in the arms. Elliptical – A round flattened ball. Contains mostly old stars. Irregular – No certain shape. Contain many bright young stars and much dust and gas. ...
Galaxies
... light that has a longer wavelength than it had when it was emitted (a redshift), while observers looking at an approaching source see light that is shifted to shorter wavelength (a blueshift). ...
... light that has a longer wavelength than it had when it was emitted (a redshift), while observers looking at an approaching source see light that is shifted to shorter wavelength (a blueshift). ...
The Hubble Deep Field (HDF)
... The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. They pointed Hubble at a fairly empty region of space, one where very few stars are seen. The image was assembled from 342 separate exp ...
... The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. They pointed Hubble at a fairly empty region of space, one where very few stars are seen. The image was assembled from 342 separate exp ...
The Hubble Deep Field (HDF)
... The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. They pointed Hubble at a fairly empty region of space, one where very few stars are seen. The image was assembled from 342 separate exp ...
... The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. They pointed Hubble at a fairly empty region of space, one where very few stars are seen. The image was assembled from 342 separate exp ...
Galaxy clusters - University of Iowa Astrophysics
... • By measuring multiple images of one source, we can figure out the total mass in the lens. This provides an independent confirmation of dark matter. • A lense can act as a huge telescope. The deepest images of the most distant galaxies are obtained with clusters acting as gravitational lenses. ...
... • By measuring multiple images of one source, we can figure out the total mass in the lens. This provides an independent confirmation of dark matter. • A lense can act as a huge telescope. The deepest images of the most distant galaxies are obtained with clusters acting as gravitational lenses. ...
Science, 4th 9 weeks
... Moon, Sun, other planets, asteroids, comets, stars, other solar systems and galaxies. ...
... Moon, Sun, other planets, asteroids, comets, stars, other solar systems and galaxies. ...
Milky Way galaxy - Uplift North Hills Prep
... rotate around North Celestial Pole. As the Earth spins on its axis, the sky seems to rotate around us. This motion produces the concentric arcs traced out by the stars in this time exposure of the night sky. In the middle of the picture is the North Celestial Pole (NCP), easily identified as the poi ...
... rotate around North Celestial Pole. As the Earth spins on its axis, the sky seems to rotate around us. This motion produces the concentric arcs traced out by the stars in this time exposure of the night sky. In the middle of the picture is the North Celestial Pole (NCP), easily identified as the poi ...
The Universe and Galaxies - West Jefferson Local Schools
... B. Milky Way galaxy - the galaxy we live in - consists of stars, and, clouds of dust and gas between stars (interstellar matter) - all the stars we see at night are in the Milky Way galaxy (about 400 billion stars) ...
... B. Milky Way galaxy - the galaxy we live in - consists of stars, and, clouds of dust and gas between stars (interstellar matter) - all the stars we see at night are in the Milky Way galaxy (about 400 billion stars) ...
Bellringer - Madison County Schools
... As the particles rotate around the protostar, they flatten out (like pizza dough) into a disc shape that is called ...
... As the particles rotate around the protostar, they flatten out (like pizza dough) into a disc shape that is called ...
Watching Galaxies Form Near the Beginning of Time
... Distance and time are always mixed in astronomical observations. ...
... Distance and time are always mixed in astronomical observations. ...
The Universe Starring Man? The Impact of Scientific
... Also after Copernicus • Heat Death of the Universe? • The Big Crunch ...
... Also after Copernicus • Heat Death of the Universe? • The Big Crunch ...
Multiple choice test questions 2, Winter Semester
... 27) What are the two possible explanations for not seeing something glowing brightly along every line-of-sight? I) The universe is infinite in size and infinitely old, but dust absorbs most starlight from far away stars. II) The universe has a finite number of stars. III) The universe is changing i ...
... 27) What are the two possible explanations for not seeing something glowing brightly along every line-of-sight? I) The universe is infinite in size and infinitely old, but dust absorbs most starlight from far away stars. II) The universe has a finite number of stars. III) The universe is changing i ...
History Test Review Answers - School District of La Crosse
... 11.The__EGYPTIAN____________culture based their planting of the crops on the rising of the star Sirius, because the Nile would flood about this time. 12. ___HELIOCENTRIC__________model suggest the earth is the center of the solar system 13. The problem with ptolemy's model is he used imaginary ___C ...
... 11.The__EGYPTIAN____________culture based their planting of the crops on the rising of the star Sirius, because the Nile would flood about this time. 12. ___HELIOCENTRIC__________model suggest the earth is the center of the solar system 13. The problem with ptolemy's model is he used imaginary ___C ...
Blank Jeopardy
... What are found in the spherical halos of spiral galaxies and near elliptical galaxies? ...
... What are found in the spherical halos of spiral galaxies and near elliptical galaxies? ...
OCN 201 Origin of the Universe
... Test idea with new observations or by making predictions If new observations, do not agree with the idea or its predictions, modify idea or develop a new one ...
... Test idea with new observations or by making predictions If new observations, do not agree with the idea or its predictions, modify idea or develop a new one ...
chapter 28 pages 747-752
... • Edwin Hubble saw that galaxies are moving away from earth based on the red shifts he saw in 1929 • In a medium that is uniformly expanding, all points are moving away from all other points, and no point has to be at the center ...
... • Edwin Hubble saw that galaxies are moving away from earth based on the red shifts he saw in 1929 • In a medium that is uniformly expanding, all points are moving away from all other points, and no point has to be at the center ...
Topic 3 – Waves and the Universe
... o this tells us that the Universe is expanding Note: The further away a galaxy is, the faster it is moving away from us Astronomers use this information and other data to work out theories that explain the past and present state of the Universe… Big Bang theory: First suggested in the 1930s, this s ...
... o this tells us that the Universe is expanding Note: The further away a galaxy is, the faster it is moving away from us Astronomers use this information and other data to work out theories that explain the past and present state of the Universe… Big Bang theory: First suggested in the 1930s, this s ...
Observable universe
The observable universe consists of the galaxies and other matter that can, in principle, be observed from Earth at the present time because light and other signals from these objects has had time to reach the Earth since the beginning of the cosmological expansion. Assuming the universe is isotropic, the distance to the edge of the observable universe is roughly the same in every direction. That is, the observable universe is a spherical volume (a ball) centered on the observer. Every location in the Universe has its own observable universe, which may or may not overlap with the one centered on Earth.The word observable used in this sense does not depend on whether modern technology actually permits detection of radiation from an object in this region (or indeed on whether there is any radiation to detect). It simply indicates that it is possible in principle for light or other signals from the object to reach an observer on Earth. In practice, we can see light only from as far back as the time of photon decoupling in the recombination epoch. That is when particles were first able to emit photons that were not quickly re-absorbed by other particles. Before then, the Universe was filled with a plasma that was opaque to photons.The surface of last scattering is the collection of points in space at the exact distance that photons from the time of photon decoupling just reach us today. These are the photons we detect today as cosmic microwave background radiation (CMBR). However, with future technology, it may be possible to observe the still older relic neutrino background, or even more distant events via gravitational waves (which also should move at the speed of light). Sometimes astrophysicists distinguish between the visible universe, which includes only signals emitted since recombination—and the observable universe, which includes signals since the beginning of the cosmological expansion (the Big Bang in traditional cosmology, the end of the inflationary epoch in modern cosmology). According to calculations, the comoving distance (current proper distance) to particles from the CMBR, which represent the radius of the visible universe, is about 14.0 billion parsecs (about 45.7 billion light years), while the comoving distance to the edge of the observable universe is about 14.3 billion parsecs (about 46.6 billion light years), about 2% larger.The best estimate of the age of the universe as of 2015 is 7010137990000000000♠13.799±0.021 billion years but due to the expansion of space humans are observing objects that were originally much closer but are now considerably farther away (as defined in terms of cosmological proper distance, which is equal to the comoving distance at the present time) than a static 13.8 billion light-years distance. It is estimated that the diameter of the observable universe is about 28 gigaparsecs (91 billion light-years, 8.8×1026 metres or 5.5×1023 miles), putting the edge of the observable universe at about 46–47 billion light-years away.