Migration of giant planets in planetesimal discs
... distance and can survive only if the inner disc is truncated or as a result of tidal interaction with the star. In this case the semimajor axis, a, of the planetary orbit is less than 0.1 au. Orbits with larger a are obtained for smaller values of the disc mass or for a rapid evolution (depletion) o ...
... distance and can survive only if the inner disc is truncated or as a result of tidal interaction with the star. In this case the semimajor axis, a, of the planetary orbit is less than 0.1 au. Orbits with larger a are obtained for smaller values of the disc mass or for a rapid evolution (depletion) o ...
New Phenomena: Recent Results and Prospects from the Fermilab
... • It took awhile, but they eventually figured out that the motion of the planets made much more sense if one assumed that the Sun was the center of motion rather than the Earth • Then Kepler made some important observations WAY before Newton ...
... • It took awhile, but they eventually figured out that the motion of the planets made much more sense if one assumed that the Sun was the center of motion rather than the Earth • Then Kepler made some important observations WAY before Newton ...
The Occurrence and Architecture of Exoplanetary Systems
... planets are prevalent. The probability that a random star has a planet is of order unity for the stars that have been searched most thoroughly: main-sequence dwarfs with masses 0.5-1.2 M . Monistic theories have prevailed, including the currently favored theory of planet formation in which planets ...
... planets are prevalent. The probability that a random star has a planet is of order unity for the stars that have been searched most thoroughly: main-sequence dwarfs with masses 0.5-1.2 M . Monistic theories have prevailed, including the currently favored theory of planet formation in which planets ...
ASTRONOMY REVIEW Qs - Westhampton Beach School District
... 72. Base your answer to the following question on the diagram below, which represents a model of the Earth-Moon system as viewed from above the North Pole. The numbers 1 through 8 represent positions of the Moon as it revolves around Earth. The parts of the diagram lettered A through D show how the ...
... 72. Base your answer to the following question on the diagram below, which represents a model of the Earth-Moon system as viewed from above the North Pole. The numbers 1 through 8 represent positions of the Moon as it revolves around Earth. The parts of the diagram lettered A through D show how the ...
Cycles of the Sky
... • Although there are usually no more than one or two lunar eclipses each year, it is not difficult to see one. – You need only be on the dark side of Earth when the moon passes through Earth’s shadow. That is, the eclipse must occur between sunset and sunrise at your location. ...
... • Although there are usually no more than one or two lunar eclipses each year, it is not difficult to see one. – You need only be on the dark side of Earth when the moon passes through Earth’s shadow. That is, the eclipse must occur between sunset and sunrise at your location. ...
honors earth science - Grosse Pointe Public School System
... 5. Describe what causes a comet’s tail to change 6. Define a planet. Use this to explain why Pluto is not a planet 7. Explain why we see planets in retrograde 8. Describe how exoplanets are being discovered (radial velocity and transit methods) 9. Compare a light year and an AU. When would each be u ...
... 5. Describe what causes a comet’s tail to change 6. Define a planet. Use this to explain why Pluto is not a planet 7. Explain why we see planets in retrograde 8. Describe how exoplanets are being discovered (radial velocity and transit methods) 9. Compare a light year and an AU. When would each be u ...
Changes in a scientific concept: what is a planet? - Philsci
... planets (nine TNOs and three asteroids). This definition does not said anything about the upper limit of the mass for a planet, and thus the definition can be applied only to those planetary systems (such as our Solar system) where candidate planets are not too massive. Finally, the definition passe ...
... planets (nine TNOs and three asteroids). This definition does not said anything about the upper limit of the mass for a planet, and thus the definition can be applied only to those planetary systems (such as our Solar system) where candidate planets are not too massive. Finally, the definition passe ...
FREE Sample Here
... 33) Which of the following statements about the Moon is true? A) The Moon goes through a cycle of phases because it always has the same side facing Earth. B) If you see a full Moon from North America, someone in South America would see a new Moon. C) The Moon's distance from Earth varies during its ...
... 33) Which of the following statements about the Moon is true? A) The Moon goes through a cycle of phases because it always has the same side facing Earth. B) If you see a full Moon from North America, someone in South America would see a new Moon. C) The Moon's distance from Earth varies during its ...
Lecture 9 - Notes on Galileo
... equator. The correct time must be known much better than this to be of use. Ships were often at sea for months or years and clocks in Galileo’s time were nowhere near up to the task. Galileo suggested that the moons of Jupiter were in effect an astronomical clock. For example, Io the moon nearest Ju ...
... equator. The correct time must be known much better than this to be of use. Ships were often at sea for months or years and clocks in Galileo’s time were nowhere near up to the task. Galileo suggested that the moons of Jupiter were in effect an astronomical clock. For example, Io the moon nearest Ju ...
KS1 Education Guide - Immersive Theatres
... The Earth is the third planet from the Sun in a system that includes the Moon, the Sun, seven other planets and their moons, and smaller objects, such as asteroids and comets. The Sun, an average star, is the central and largest body in the Solar System. (5 – 8 Standard) ...
... The Earth is the third planet from the Sun in a system that includes the Moon, the Sun, seven other planets and their moons, and smaller objects, such as asteroids and comets. The Sun, an average star, is the central and largest body in the Solar System. (5 – 8 Standard) ...
1 NOTES ON GALILEO Galileo was born in Pisa of the famous
... equator. The correct time must be known much better than this to be of use. Ships were often at sea for months or years and clocks in Galileo’s time were nowhere near up to the task. Galileo suggested that the moons of Jupiter were in effect an astronomical clock. For example, Io the moon nearest Ju ...
... equator. The correct time must be known much better than this to be of use. Ships were often at sea for months or years and clocks in Galileo’s time were nowhere near up to the task. Galileo suggested that the moons of Jupiter were in effect an astronomical clock. For example, Io the moon nearest Ju ...
THE MOON - HMXEarthScience
... of the planet blocking some of the starlight when it is between Ogle-Tr-3 and Earth. This observation allowed scientists to find not only the planet, but also to determine the planet’s mass and density The mass has been calculated to be approximately 159 times the mass of Earth. The planet is only 2 ...
... of the planet blocking some of the starlight when it is between Ogle-Tr-3 and Earth. This observation allowed scientists to find not only the planet, but also to determine the planet’s mass and density The mass has been calculated to be approximately 159 times the mass of Earth. The planet is only 2 ...
The Cosmic Perspective, 7e (Bennett et al.) Chapter 2 Discovering
... 33) Which of the following statements about the Moon is true? A) The Moon goes through a cycle of phases because it always has the same side facing Earth. B) If you see a full Moon from North America, someone in South America would see a new Moon. C) The Moon's distance from Earth varies during its ...
... 33) Which of the following statements about the Moon is true? A) The Moon goes through a cycle of phases because it always has the same side facing Earth. B) If you see a full Moon from North America, someone in South America would see a new Moon. C) The Moon's distance from Earth varies during its ...
Sample
... 33) Which of the following statements about the Moon is true? A) The Moon goes through a cycle of phases because it always has the same side facing Earth. B) If you see a full Moon from North America, someone in South America would see a new Moon. C) The Moon's distance from Earth varies during its ...
... 33) Which of the following statements about the Moon is true? A) The Moon goes through a cycle of phases because it always has the same side facing Earth. B) If you see a full Moon from North America, someone in South America would see a new Moon. C) The Moon's distance from Earth varies during its ...
Planet formation
... Snow line: 2.7 AU from the Sun, temperatures are low enough that molecules appear in the form of icy grains, and dust grains have sufficiently low temperatures to capture ice molecules in their mantles. The Snow line is crucial for the planet formation process, as ice-covered grains are suggested to ...
... Snow line: 2.7 AU from the Sun, temperatures are low enough that molecules appear in the form of icy grains, and dust grains have sufficiently low temperatures to capture ice molecules in their mantles. The Snow line is crucial for the planet formation process, as ice-covered grains are suggested to ...
Planetesimal collisions in binary systems
... is limited by the total amount of solid material present in the disc. In the 2D approximation, this mass has to be artificially low in order to end up with a realistic collision time scale. For a disc that has twice the solid material, keeping all other parameters the same, growth up to 100 km was o ...
... is limited by the total amount of solid material present in the disc. In the 2D approximation, this mass has to be artificially low in order to end up with a realistic collision time scale. For a disc that has twice the solid material, keeping all other parameters the same, growth up to 100 km was o ...
10. Atmospheres of Planets and of Exoplanets - ETH E
... short time by photoevaporation, i.e. by ionization and acceleration of the particles with escape velocity into the free space. Since Mercury can, however, maintain his residual Atmosphere over long periods of time, there must exist a constant replenishment of particles (s. p. 422). It must, however, ...
... short time by photoevaporation, i.e. by ionization and acceleration of the particles with escape velocity into the free space. Since Mercury can, however, maintain his residual Atmosphere over long periods of time, there must exist a constant replenishment of particles (s. p. 422). It must, however, ...
Orbit and Spin
... stations: Earth, Moon, or Sun. Think of this as a free association exercise, but with objects to manipulate and investigate. Students will spend about 5 minutes at each station, and then rotate to the next station as a group. At each station students will freely explore the materials gathered to rep ...
... stations: Earth, Moon, or Sun. Think of this as a free association exercise, but with objects to manipulate and investigate. Students will spend about 5 minutes at each station, and then rotate to the next station as a group. At each station students will freely explore the materials gathered to rep ...
PLUTO - science1d
... 2. Is Pluto rocky or gaseous?_______________________ 3. Is Pluto bigger than the Earth, smaller than the Earth, or about the same size as the Earth?_______________________ 4. How long does it take Pluto to revolve around the Sun once (how long is one year on Pluto)?_______________________ 5. Is Plut ...
... 2. Is Pluto rocky or gaseous?_______________________ 3. Is Pluto bigger than the Earth, smaller than the Earth, or about the same size as the Earth?_______________________ 4. How long does it take Pluto to revolve around the Sun once (how long is one year on Pluto)?_______________________ 5. Is Plut ...
Powerpoint slides - Earth & Planetary Sciences
... Solar System Formation - Overview • Some event (e.g. supernova) triggers gravitational collapse of a cloud (nebula) of dust and gas • As the nebula collapses, it forms a spinning disk (due to conservation of angular momentum) • The collapse releases gravitational energy, which heats the centre • Th ...
... Solar System Formation - Overview • Some event (e.g. supernova) triggers gravitational collapse of a cloud (nebula) of dust and gas • As the nebula collapses, it forms a spinning disk (due to conservation of angular momentum) • The collapse releases gravitational energy, which heats the centre • Th ...
October 2016 BRAS Newsletter - The Baton Rouge Astronomical
... NOTE: Ms. Angelle needs these measurements to compliment out the data she has gathered. Use any opportunity to take at least one or two measurements. ...
... NOTE: Ms. Angelle needs these measurements to compliment out the data she has gathered. Use any opportunity to take at least one or two measurements. ...
a PDF version of the Uniglobe Manual.
... A system of coordinates similar to that described in Figures 11 and 12 is used to label directions in the sky. These directions are represented as positions on the CELESTIAL GLOBE of the Uniglobe. The effect of the size of the earth on measurement of angle is shown in Figure 13. The extremely large ...
... A system of coordinates similar to that described in Figures 11 and 12 is used to label directions in the sky. These directions are represented as positions on the CELESTIAL GLOBE of the Uniglobe. The effect of the size of the earth on measurement of angle is shown in Figure 13. The extremely large ...
Electronic Text Book Unit 11
... and its relationship to the sun and moon. Today we know that Earth both spins and revolves around the sun. We also know that the moon revolves around Earth. These movements cause the astronomical cycles that are the basis for our calendar. What is A calendar is a means of keeping track of all the da ...
... and its relationship to the sun and moon. Today we know that Earth both spins and revolves around the sun. We also know that the moon revolves around Earth. These movements cause the astronomical cycles that are the basis for our calendar. What is A calendar is a means of keeping track of all the da ...
Satellite system (astronomy)
A satellite system is a set of gravitationally bound objects in orbit around a planetary mass object or minor planet. Generally speaking, it is a set of natural satellites (moons), although such systems may also consist of bodies such as circumplanetary disks, ring systems, moonlets, minor-planet moons and artificial satellites any of which may themselves have satellite systems of their own. Some satellite systems have complex interactions with both their parent and other moons, including magnetic, tidal, atmospheric and orbital interactions such as orbital resonances and libration. Individually major satellite objects are designated in Roman numerals. Satellite systems are referred to either by the possessive adjectives of their primary (e.g. ""Jovian system""), or less commonly by the name of their primary (e.g. ""Jupiter system""). Where only one satellite is known, or it is a binary orbiting a common centre of gravity, it may be referred to using the hyphenated names of the primary and major satellite (e.g. the ""Earth-Moon system"").Many Solar System objects are known to possess satellite systems, though their origin is still unclear. Notable examples include the largest satellite system, the Jovian system, with 67 known moons (including the large Galilean moons) and the Saturnian System with 62 known moons (and the most visible ring system in the Solar System). Both satellite systems are large and diverse. In fact all of the giant planets of the Solar System possess large satellite systems as well as planetary rings, and it is inferred that this is a general pattern. Several objects farther from the Sun also have satellite systems consisting of multiple moons, including the complex Plutonian system where multiple objects orbit a common center of mass, as well as many asteroids and plutinos. Apart from the Earth-Moon system and Mars' system of two tiny natural satellites, the other terrestrial planets are generally not considered satellite systems, although some have been orbited by artificial satellites originating from Earth.Little is known of satellite systems beyond the Solar System, although it is inferred that natural satellites are common. J1407b is an example of an extrasolar satellite system. It is also theorised that Rogue planets ejected from their planetary system could retain a system of satellites.