Mars-Bound Comet Siding Spring Sprouts Multiple Jets Eastern
... This is an orbit diagram for the outer solar system. The Sun and Terrestrial planets are at the center. The orbits of the four giant planets, Jupiter, Saturn, Uranus and Neptune, are shown by purple solid circles. The Kuiper Belt, including Pluto, is shown by the dotted light blue region just beyond ...
... This is an orbit diagram for the outer solar system. The Sun and Terrestrial planets are at the center. The orbits of the four giant planets, Jupiter, Saturn, Uranus and Neptune, are shown by purple solid circles. The Kuiper Belt, including Pluto, is shown by the dotted light blue region just beyond ...
at A-stars?
... • Pleiades: an “open cluster” of stars about 100 million years old • Compare with Sun’s age of about 4.6 BILLION years old ...
... • Pleiades: an “open cluster” of stars about 100 million years old • Compare with Sun’s age of about 4.6 BILLION years old ...
8th Ed【CH13】
... conservation of energy. The initial potential energy is Ui = −GM2/ri, where M is the mass of either star and ri is their initial center-to-center separation. The initial kinetic energy is zero since the stars are at rest. The final potential energy is Uf = −2GM /ri since the final separation is ri/2 ...
... conservation of energy. The initial potential energy is Ui = −GM2/ri, where M is the mass of either star and ri is their initial center-to-center separation. The initial kinetic energy is zero since the stars are at rest. The final potential energy is Uf = −2GM /ri since the final separation is ri/2 ...
PHYSICAL SCIENCE STUDY GUIDE CHAPTER 10: 1. What are the
... 15. Describe the moons of Pluto, Eris and Haumea. 16. Discus the locations and characteristics of asteroids. Name and describe Vesta and Ceres. 17. Discuss the nature and origin of Meteorites. 18. Describe the appearance, nature and origin of comets. Why does the tail always point away from the sun? ...
... 15. Describe the moons of Pluto, Eris and Haumea. 16. Discus the locations and characteristics of asteroids. Name and describe Vesta and Ceres. 17. Discuss the nature and origin of Meteorites. 18. Describe the appearance, nature and origin of comets. Why does the tail always point away from the sun? ...
Set 2: Nature of Galaxies
... • Non-constancy of the Ωlp will still cause winding but of the pattern and typically at a slower rate for (1, 2). • Where the local pattern speed matches the global pattern speed Lindblad resonances occur where the epicyclic amplitude increases due to forcing from the local density enhancement - can ...
... • Non-constancy of the Ωlp will still cause winding but of the pattern and typically at a slower rate for (1, 2). • Where the local pattern speed matches the global pattern speed Lindblad resonances occur where the epicyclic amplitude increases due to forcing from the local density enhancement - can ...
a MS Word version.
... 18. Describe the main "standard candles" that are used to measure the distances to galaxies that are used to determine the Hubble redshift relation. What is the approximate current best value for Hubble's constant? Given this constant, how is the Hubble relation used to determine the distance to far ...
... 18. Describe the main "standard candles" that are used to measure the distances to galaxies that are used to determine the Hubble redshift relation. What is the approximate current best value for Hubble's constant? Given this constant, how is the Hubble relation used to determine the distance to far ...
Chapter 16 - Astronomy
... nucleus, it wasn’t until the development of IR/radio and X-ray/gamma-ray astronomy that we could “look” at the Galactic nucleus. 3. The observed number density of stars increases as we get closer to the Galactic center, down to about 2 pc from the center. For distances closer than 2 pc, observations ...
... nucleus, it wasn’t until the development of IR/radio and X-ray/gamma-ray astronomy that we could “look” at the Galactic nucleus. 3. The observed number density of stars increases as we get closer to the Galactic center, down to about 2 pc from the center. For distances closer than 2 pc, observations ...
Constellations and the Galactic Plane
... are all familiar names to northern hemisphere night sky watchers. There are 88 named constellations, each having numerous stars. This exercise takes you through some of the most recognizable ones in the October-November sky in the Bay Area. The patterns of stars remain the same over the ages. That i ...
... are all familiar names to northern hemisphere night sky watchers. There are 88 named constellations, each having numerous stars. This exercise takes you through some of the most recognizable ones in the October-November sky in the Bay Area. The patterns of stars remain the same over the ages. That i ...
The Milky Way: Spiral galaxies:
... decay! The probability of an absorption is even rarer. •! HI gas mass is directly proportional to 21 cm line intensity •! HI disk is much more extended than optical light, typically out to 2R25 sometimes farther •! The radial motion of the 21 cm line can be used to measure rotation in spiral galaxie ...
... decay! The probability of an absorption is even rarer. •! HI gas mass is directly proportional to 21 cm line intensity •! HI disk is much more extended than optical light, typically out to 2R25 sometimes farther •! The radial motion of the 21 cm line can be used to measure rotation in spiral galaxie ...
Determining Distances to Other Galaxies
... If stars in the disk of a spiral galaxy are on slightly eccentric orbits, and the position angle of these ellipses vary with radius, a spiral-shaped density wave can be formed from a set of nested ovals. Density wave theory is really based on the premise that mutual gravitational attraction of stars ...
... If stars in the disk of a spiral galaxy are on slightly eccentric orbits, and the position angle of these ellipses vary with radius, a spiral-shaped density wave can be formed from a set of nested ovals. Density wave theory is really based on the premise that mutual gravitational attraction of stars ...
January 2015 - Newbury Astronomical Society
... The image above shows the process of star formation as it is happening in the ‘Eagle Nebula’ which is part of Messier 16 (M16) in the constellation of Serpens. The red dots shining in the pillars are new stars starting to ‘peep’ out of the gas and dust clouds of the nebula. The pillars are being sha ...
... The image above shows the process of star formation as it is happening in the ‘Eagle Nebula’ which is part of Messier 16 (M16) in the constellation of Serpens. The red dots shining in the pillars are new stars starting to ‘peep’ out of the gas and dust clouds of the nebula. The pillars are being sha ...
The Milky Way Galaxy (ch. 23)
... nearly spherical shape, rest of gas collapsed to disk which has formed stars continuously since that time. (Think about how above properties suggest this.) More recently it was discovered that our Galaxy has a weak but detectable bar structure in the bulge. This rotating bar is important, because it ...
... nearly spherical shape, rest of gas collapsed to disk which has formed stars continuously since that time. (Think about how above properties suggest this.) More recently it was discovered that our Galaxy has a weak but detectable bar structure in the bulge. This rotating bar is important, because it ...
Powerpoint slides - Earth & Planetary Sciences
... Note that the planet’s mass is uncertain by a factor of sin i. The Ms+Mp term arises because the star is orbiting the centre of mass of the system. Present-day instrumental sensitivity is about 3 m/s; Jupiter’s effect on the Sun is to perturb it by about 12 m/s. From Lissauer and Depater, Planetary ...
... Note that the planet’s mass is uncertain by a factor of sin i. The Ms+Mp term arises because the star is orbiting the centre of mass of the system. Present-day instrumental sensitivity is about 3 m/s; Jupiter’s effect on the Sun is to perturb it by about 12 m/s. From Lissauer and Depater, Planetary ...
Astro Midterm Review Part II: Ch 2
... 6) How do the densities of the jovian and terrestrial planets compare? A) The closer a planet lies to the Sun, the less its density. B) More massive jovians all have high densities, compared to the tiny terrestrials. C) All terrestrials are more dense than any of the jovians. D) Made from the same s ...
... 6) How do the densities of the jovian and terrestrial planets compare? A) The closer a planet lies to the Sun, the less its density. B) More massive jovians all have high densities, compared to the tiny terrestrials. C) All terrestrials are more dense than any of the jovians. D) Made from the same s ...
TAP702-0: Red shift - Teaching Advanced Physics
... either side of the nucleus at the locations indicated in the diagram. The gas on one side of the galaxy is strongly red shifted and on the other side blue-shifted, showing that the disc is rotating at a speed of about 550 km s–1. Note that M87 itself does not rotate – the centre part does. ...
... either side of the nucleus at the locations indicated in the diagram. The gas on one side of the galaxy is strongly red shifted and on the other side blue-shifted, showing that the disc is rotating at a speed of about 550 km s–1. Note that M87 itself does not rotate – the centre part does. ...
fifth midterm -- review problems
... The Earth is 9.3 × 10 7 miles from the Sun. Calculate the gravitational force between the Earth and the Sun. The Earth-Sun distance is called 1.00 A.U. (astronomical unit). If Jupiter orbits the Sun in 11.9 years, what is the Jupiter-Sun distance in A.U. (Assume circular orbits.) If the mass of the ...
... The Earth is 9.3 × 10 7 miles from the Sun. Calculate the gravitational force between the Earth and the Sun. The Earth-Sun distance is called 1.00 A.U. (astronomical unit). If Jupiter orbits the Sun in 11.9 years, what is the Jupiter-Sun distance in A.U. (Assume circular orbits.) If the mass of the ...
TAP702-0: Red shift - Teaching Advanced Physics
... either side of the nucleus at the locations indicated in the diagram. The gas on one side of the galaxy is strongly red shifted and on the other side blue-shifted, showing that the disc is rotating at a speed of about 550 km s–1. Note that M87 itself does not rotate – the centre part does. ...
... either side of the nucleus at the locations indicated in the diagram. The gas on one side of the galaxy is strongly red shifted and on the other side blue-shifted, showing that the disc is rotating at a speed of about 550 km s–1. Note that M87 itself does not rotate – the centre part does. ...
TAP702-0: Red shift - Teaching Advanced Physics
... either side of the nucleus at the locations indicated in the diagram. The gas on one side of the galaxy is strongly red shifted and on the other side blue-shifted, showing that the disc is rotating at a speed of about 550 km s–1. Note that M87 itself does not rotate – the centre part does. ...
... either side of the nucleus at the locations indicated in the diagram. The gas on one side of the galaxy is strongly red shifted and on the other side blue-shifted, showing that the disc is rotating at a speed of about 550 km s–1. Note that M87 itself does not rotate – the centre part does. ...
Rare Earth hypothesis
In planetary astronomy and astrobiology, the Rare Earth Hypothesis argues that the origin of life and the evolution of biological complexity such as sexually reproducing, multicellular organisms on Earth (and, subsequently, human intelligence) required an improbable combination of astrophysical and geological events and circumstances. The hypothesis argues that complex extraterrestrial life is a very improbable phenomenon and likely to be extremely rare. The term ""Rare Earth"" originates from Rare Earth: Why Complex Life Is Uncommon in the Universe (2000), a book by Peter Ward, a geologist and paleontologist, and Donald E. Brownlee, an astronomer and astrobiologist, both faculty members at the University of Washington.An alternative view point was argued by Carl Sagan and Frank Drake, among others. It holds that Earth is a typical rocky planet in a typical planetary system, located in a non-exceptional region of a common barred-spiral galaxy. Given the principle of mediocrity (also called the Copernican principle), it is probable that the universe teems with complex life. Ward and Brownlee argue to the contrary: that planets, planetary systems, and galactic regions that are as friendly to complex life as are the Earth, the Solar System, and our region of the Milky Way are very rare.