ES Chapter 29
... Kepler’s Second and Third Laws – Kepler also found that the square of the orbital period (P) equals the cube of the semimajor axis of the orbital ellipse (a). – Kepler’s third law states P 2 = a 3, where P is a unit of time measured in Earth years, and a is a unit of length measured in astronomical ...
... Kepler’s Second and Third Laws – Kepler also found that the square of the orbital period (P) equals the cube of the semimajor axis of the orbital ellipse (a). – Kepler’s third law states P 2 = a 3, where P is a unit of time measured in Earth years, and a is a unit of length measured in astronomical ...
circular orbit
... Terminology related to ellipses: • Focus (singular) and Foci (plural) • Major and Minor axes • Semi-major axis (half the major axis) – Average distance between the Sun and planet – In astronomy, usually represented by the letter “a” ...
... Terminology related to ellipses: • Focus (singular) and Foci (plural) • Major and Minor axes • Semi-major axis (half the major axis) – Average distance between the Sun and planet – In astronomy, usually represented by the letter “a” ...
Chapter 2 Universe and Planetary Geology
... definition, our Solar System has eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. In the new scheme, Pluto will be one of several "dwarf planets" in the Solar System; but "dwarf planets" are not considered true planets. The controversy over Pluto's status as a planet ...
... definition, our Solar System has eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. In the new scheme, Pluto will be one of several "dwarf planets" in the Solar System; but "dwarf planets" are not considered true planets. The controversy over Pluto's status as a planet ...
6.2 Measuring the Planets
... All orbits but Mercury’s are close to same plane As we move outward from the Sun, the distance Between adjacent planets increases Entire solar system spans nearly 100 AU (diameter of Kuiper belt) ...
... All orbits but Mercury’s are close to same plane As we move outward from the Sun, the distance Between adjacent planets increases Entire solar system spans nearly 100 AU (diameter of Kuiper belt) ...
25.4 The Outer Solar System
... The solar system extends much farther out than the Kuiper belt. The Oort Cloud is a very sparse sphere of comets thought to encircle the solar system out to a distance of about 50,000 AU. Occasionally objects from the Oort cloud enter the inner solar system, where they appear as comets. ...
... The solar system extends much farther out than the Kuiper belt. The Oort Cloud is a very sparse sphere of comets thought to encircle the solar system out to a distance of about 50,000 AU. Occasionally objects from the Oort cloud enter the inner solar system, where they appear as comets. ...
Mercury_Orbit_Lab_1_(better_than_2)
... How do we know what the orbit of a planet is like? At first glance this appears to be a difficult question, but in many cases it is surprisingly easy to derive an orbit from basic observations. In this exercise you will use a set of simple observations, which you could have made yourself, to discove ...
... How do we know what the orbit of a planet is like? At first glance this appears to be a difficult question, but in many cases it is surprisingly easy to derive an orbit from basic observations. In this exercise you will use a set of simple observations, which you could have made yourself, to discove ...
The Search for Worlds Like Our Own
... the last 25 years. In 2007, the first space mission dedicated to the search for ‘‘rocky’’ or terrestrial planets was launched by the French space agency, Centre National d’Études Spatiales (CNES), with the active participation of ESA and the space agencies of Austria, Belgium, Brazil, Germany, and ...
... the last 25 years. In 2007, the first space mission dedicated to the search for ‘‘rocky’’ or terrestrial planets was launched by the French space agency, Centre National d’Études Spatiales (CNES), with the active participation of ESA and the space agencies of Austria, Belgium, Brazil, Germany, and ...
The Milky Way
... 18. How does the solar nebula theory explain the formation of an asteroid belt between Mars and Jupiter, rather than a planet at this location? a. A single planet formed here and was disrupted by an impact with a large comet from the outer Solar System. b. Jupiter swept up so much material that not ...
... 18. How does the solar nebula theory explain the formation of an asteroid belt between Mars and Jupiter, rather than a planet at this location? a. A single planet formed here and was disrupted by an impact with a large comet from the outer Solar System. b. Jupiter swept up so much material that not ...
Answer - Brock physics
... (a) * the night sky should not be dark. (b) the Sun should have died long ago. (c) the solar system should be considerably smaller. (d) the Milky Way should contain much more dust than it actually has. 39. A simple resolution to Olbers’s paradox, suggested by the poet Edgar Allan Poe, and later gene ...
... (a) * the night sky should not be dark. (b) the Sun should have died long ago. (c) the solar system should be considerably smaller. (d) the Milky Way should contain much more dust than it actually has. 39. A simple resolution to Olbers’s paradox, suggested by the poet Edgar Allan Poe, and later gene ...
Solar System Science
... 2. How does the star lose AM and slow down? Solar-type stars all rotate at about the same speed at the Sun. ...
... 2. How does the star lose AM and slow down? Solar-type stars all rotate at about the same speed at the Sun. ...
Lecture #4 - History of Astronomy - Ptolemy to Kepler
... Together laws 2 and 3 imply that there exists a force, between the sun and planets, that weakens with increasing distance – Invested Sun with physical properties necessary for the uniform description of planetary motions ...
... Together laws 2 and 3 imply that there exists a force, between the sun and planets, that weakens with increasing distance – Invested Sun with physical properties necessary for the uniform description of planetary motions ...
On the migration of a system of protoplanets
... of the inner planet it has reached a mass of 2.3 MJup, while the outer planet has reached a mass of 3.2 MJup. The net gravitational torques exerted by the disc on the planets result in an inward migration of the outer planet on time-scales comparable to the viscous evolution time of the disc. The se ...
... of the inner planet it has reached a mass of 2.3 MJup, while the outer planet has reached a mass of 3.2 MJup. The net gravitational torques exerted by the disc on the planets result in an inward migration of the outer planet on time-scales comparable to the viscous evolution time of the disc. The se ...
On the migration of a system of protoplanets
... of the inner planet it has reached a mass of 2.3 MJup, while the outer planet has reached a mass of 3.2 MJup. The net gravitational torques exerted by the disc on the planets result in an inward migration of the outer planet on time-scales comparable to the viscous evolution time of the disc. The se ...
... of the inner planet it has reached a mass of 2.3 MJup, while the outer planet has reached a mass of 3.2 MJup. The net gravitational torques exerted by the disc on the planets result in an inward migration of the outer planet on time-scales comparable to the viscous evolution time of the disc. The se ...
Formation of Regular Satellites from Ancient Massive Rings in the
... which planetary tides prevent aggregation), satellites form and migrate away. Here, we show that most regular satellites in the solar system probably formed in this way. According to our analytical model, when the spreading is slow, a retinue of satellites appear with masses increasing with distance ...
... which planetary tides prevent aggregation), satellites form and migrate away. Here, we show that most regular satellites in the solar system probably formed in this way. According to our analytical model, when the spreading is slow, a retinue of satellites appear with masses increasing with distance ...
Astronomy Today 7th Edition Chaisson/McMillan
... 4. Direction of orbital motion is the same as direction of Sun’s rotation 5. Direction of most planets’ rotation is also the same as the Sun’s ...
... 4. Direction of orbital motion is the same as direction of Sun’s rotation 5. Direction of most planets’ rotation is also the same as the Sun’s ...
powerpoints - Georgia Southern University Astrophysics
... after ground based followup – so still only 16 ...
... after ground based followup – so still only 16 ...
PH2213 : Examples from Chapter 6 : Gravitation Key Concepts Two
... You can apply the same process to other pairs of objects. Consider the Sun and Jupiter, the heaviest planet in the solar system. The Sun is roughly 1000 times more massive than Jupiter, but we find that the common point about which both are orbiting is about 800, 000 km out from the center of the Su ...
... You can apply the same process to other pairs of objects. Consider the Sun and Jupiter, the heaviest planet in the solar system. The Sun is roughly 1000 times more massive than Jupiter, but we find that the common point about which both are orbiting is about 800, 000 km out from the center of the Su ...
Neptune The Stormy Planet Our Solar System
... it is a stormy world. the planet has the fastest winds ever discovered in the solar system. neptune ... when pluto lost its status as our solar system’s ninth planet. LOOK UP TO THE PLANET NEPTUNE THE LAST GIGANT Thu, 20 Apr 2017 08:20:00 GMT look up to the planet neptune the last ... the eighth pla ...
... it is a stormy world. the planet has the fastest winds ever discovered in the solar system. neptune ... when pluto lost its status as our solar system’s ninth planet. LOOK UP TO THE PLANET NEPTUNE THE LAST GIGANT Thu, 20 Apr 2017 08:20:00 GMT look up to the planet neptune the last ... the eighth pla ...
The Roots of Astronomy
... • He saw that there were problems with Aristotle’s simplistic idea of a geocentric model. • Ptolemy employed an old idea of epicycles to explain help explain the discrepancies in the evidence for geocentrism. • Although he was able to make more accurate predictions than previous astronomers, his mod ...
... • He saw that there were problems with Aristotle’s simplistic idea of a geocentric model. • Ptolemy employed an old idea of epicycles to explain help explain the discrepancies in the evidence for geocentrism. • Although he was able to make more accurate predictions than previous astronomers, his mod ...
New science on the young sun, and Earth migration
... circular in its orbit, with an eccentricity of only 0.055. Such a low eccentricity for Venus does not seem to suggest a significant catastrophic event in the past. However, note that the orbital eccentricity is not a constant. For our moon, it is possible past impacts could have caused oscillations ...
... circular in its orbit, with an eccentricity of only 0.055. Such a low eccentricity for Venus does not seem to suggest a significant catastrophic event in the past. However, note that the orbital eccentricity is not a constant. For our moon, it is possible past impacts could have caused oscillations ...
CIDER 2012: Deep Time Impacts Tutorial Handout (v4) July 17
... d. Giant impacts are hypothesized to produce odd features in the planets: Mercury’s large core fraction, Venus retrograde rotation, Earth’s moon, Mars crustal dichotomy, Pluto system, Haumea system e. Calculations in this phase are done by N-body codes that are extremely computationally intensive an ...
... d. Giant impacts are hypothesized to produce odd features in the planets: Mercury’s large core fraction, Venus retrograde rotation, Earth’s moon, Mars crustal dichotomy, Pluto system, Haumea system e. Calculations in this phase are done by N-body codes that are extremely computationally intensive an ...
Lecture8_v2 - Lick Observatory
... • There are infinite worlds both like and unlike this world of ours. For the atoms being infinite in number, as was already proven, … there nowhere exists an obstacle to the infinite number of worlds. ...
... • There are infinite worlds both like and unlike this world of ours. For the atoms being infinite in number, as was already proven, … there nowhere exists an obstacle to the infinite number of worlds. ...
Planets beyond Neptune
Following the discovery of the planet Neptune in 1846, there was considerable speculation that another planet might exist beyond its orbit. The search began in the mid-19th century and culminated at the start of the 20th with Percival Lowell's quest for Planet X. Lowell proposed the Planet X hypothesis to explain apparent discrepancies in the orbits of the giant planets, particularly Uranus and Neptune, speculating that the gravity of a large unseen ninth planet could have perturbed Uranus enough to account for the irregularities.Clyde Tombaugh's discovery of Pluto in 1930 appeared to validate Lowell's hypothesis, and Pluto was officially named the ninth planet. In 1978, Pluto was conclusively determined to be too small for its gravity to affect the giant planets, resulting in a brief search for a tenth planet. The search was largely abandoned in the early 1990s, when a study of measurements made by the Voyager 2 spacecraft found that the irregularities observed in Uranus's orbit were due to a slight overestimation of Neptune's mass. After 1992, the discovery of numerous small icy objects with similar or even wider orbits than Pluto led to a debate over whether Pluto should remain a planet, or whether it and its neighbours should, like the asteroids, be given their own separate classification. Although a number of the larger members of this group were initially described as planets, in 2006 the International Astronomical Union reclassified Pluto and its largest neighbours as dwarf planets, leaving Neptune the farthest known planet in the Solar System.Today, the astronomical community widely agrees that Planet X, as originally envisioned, does not exist, but the concept of Planet X has been revived by a number of astronomers to explain other anomalies observed in the outer Solar System. In popular culture, and even among some astronomers, Planet X has become a stand-in term for any undiscovered planet in the outer Solar System, regardless of its relationship to Lowell's hypothesis. Other trans-Neptunian planets have also been suggested, based on different evidence. As of March 2014, observations with the WISE telescope have ruled out the possibility of a Saturn-sized object out to 10,000 AU, and a Jupiter-sized or larger object out to 26,000 AU.