Total Mass of the Galaxy
Total Mass of the Galaxy
Transcript: The flat rotation curve of the Milky Way has profound implications for the mass distribution of our galaxy. ... Read more
26 Jul 2011
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1min
Flat Rotation Curves
Flat Rotation Curves
Transcript: Newton’s law of gravity gives astronomers a way of estimating the mass of something from the motions of obje... Read more
26 Jul 2011
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Mass of the Disk
Mass of the Disk
Transcript: The motions of stars and gas within the disk of the galaxy can be used to estimate the mass of the Milky Way... Read more
26 Jul 2011
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1min
Rotation Curve of the Galaxy
Rotation Curve of the Galaxy
Transcript: Maps of star and gas motions reveal the rotation curve of the Milky Way galaxy shown as a plot of orbital sp... Read more
26 Jul 2011
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Stochastic Star Formation
Stochastic Star Formation
Transcript: Another idea to explain the existence of spiral arms is called the stochastic star formation theory. In thi... Read more
26 Jul 2011
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Density Waves
Density Waves
Transcript: Why does the galaxy have spiral arms? Some analogies just don’t work. A garden sprinkler sends out spiral ... Read more
26 Jul 2011
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1min
Spiral Arms
Spiral Arms
Transcript: Doppler mapping of the disk of the Milky Way by radio astronomers has revealed spiral arms. Spiral arms are... Read more
26 Jul 2011
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Mapping the Disk
Mapping the Disk
Transcript: If stars near the Sun share the same general motion around the center of our galaxy, and if visible light ca... Read more
26 Jul 2011
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1min
Motions in the Disk
Motions in the Disk
Transcript: Stars near the Sun have radial velocities measured by the Doppler shift in the range of ten to twenty kilome... Read more
26 Jul 2011
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Motion of the Sun
Motion of the Sun
Transcript: Stars near the Sun have radial velocities measured by the Doppler shift in the range of ten to twenty kilome... Read more
26 Jul 2011
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