PLANETS
... Three theories have been proposed: • 1. Gas disc migration: planet forms within a protoplanetary disc and is swept inwards with the gas as the disc evolves and material accretes onto the star. The most popular theory, as by definition gas must have been present when gas giants form. • 2. Planetesima ...
... Three theories have been proposed: • 1. Gas disc migration: planet forms within a protoplanetary disc and is swept inwards with the gas as the disc evolves and material accretes onto the star. The most popular theory, as by definition gas must have been present when gas giants form. • 2. Planetesima ...
Review: Quiz 1 Concepts Celestial sphere
... "Most things depend on the frame of reference. The few that don't are laws of physics." The precession of the poles was discovered by Hipparchus, but not the pattern." The daily motion of the sun is neither prograde nor retrograde. It is direct." The tropical year is 20 minutes longer than the orbit ...
... "Most things depend on the frame of reference. The few that don't are laws of physics." The precession of the poles was discovered by Hipparchus, but not the pattern." The daily motion of the sun is neither prograde nor retrograde. It is direct." The tropical year is 20 minutes longer than the orbit ...
Geocentric vs. Heliocentric - Answering the Debate 2014
... argument. Obviously, the Catholic Church of the Renaissance Era would have been seriously humbled by this mistake and it would have exposed great weakness in their “heavy handed” approach. A much more benevolent Catholic Church today would be far less likely to make a similar mistake HOWEVER, ma ...
... argument. Obviously, the Catholic Church of the Renaissance Era would have been seriously humbled by this mistake and it would have exposed great weakness in their “heavy handed” approach. A much more benevolent Catholic Church today would be far less likely to make a similar mistake HOWEVER, ma ...
AST1001.ch3
... layout of the solar system (planetary distances in AU). But . . . • The model was no more accurate than Ptolemaic model in predicting planetary positions, because it still used perfect circles. ...
... layout of the solar system (planetary distances in AU). But . . . • The model was no more accurate than Ptolemaic model in predicting planetary positions, because it still used perfect circles. ...
lec01_26sep2011
... This general law being once discovered, the effects of it would be easily explained, if the action of those bodies which produce them were not too complicated. A slight view of the solar system will convince us of the difficulties which attend this subject. The principal planets are attracted by the ...
... This general law being once discovered, the effects of it would be easily explained, if the action of those bodies which produce them were not too complicated. A slight view of the solar system will convince us of the difficulties which attend this subject. The principal planets are attracted by the ...
ph507lecnote06
... Deuterium burning limit occurs at around 13 Jupiter masses (1 MJ = 1.9 x 1027 kg ~ 0.001 Msun It is important to realise that for young objects, there is no large change in properties at the deuterium burning limit. ALL young stars / brown dwarfs / planets liberate gravitational potential energy a ...
... Deuterium burning limit occurs at around 13 Jupiter masses (1 MJ = 1.9 x 1027 kg ~ 0.001 Msun It is important to realise that for young objects, there is no large change in properties at the deuterium burning limit. ALL young stars / brown dwarfs / planets liberate gravitational potential energy a ...
The Milky Way
... b. Jupiter swept up so much material that not enough was left to form a planet. c. Mars was once larger and collided with a large planetesimal from the inner Solar System that sent debris outward. d. Jupiter formed early, and its gravitational influence altered the orbits of nearby accreting planete ...
... b. Jupiter swept up so much material that not enough was left to form a planet. c. Mars was once larger and collided with a large planetesimal from the inner Solar System that sent debris outward. d. Jupiter formed early, and its gravitational influence altered the orbits of nearby accreting planete ...
Looking Back in Time Space Flight to the Stars
... Leaving the inner planets of the solar system, the distances we begin to travel become nearly impossible to envision. So vast are the distances in space that astronomers have had to develop special units of measure. Just as you would not find it practical to measure the length of your school gymnasi ...
... Leaving the inner planets of the solar system, the distances we begin to travel become nearly impossible to envision. So vast are the distances in space that astronomers have had to develop special units of measure. Just as you would not find it practical to measure the length of your school gymnasi ...
We especially need imagination in science. It is not all mathematics
... • As the cloud shrank, its gravitational energy was converted into the energy of motion of gas particles falling inwards. These particles crashed into one another, converting energy of motion into the random motions of thermal energy. ...
... • As the cloud shrank, its gravitational energy was converted into the energy of motion of gas particles falling inwards. These particles crashed into one another, converting energy of motion into the random motions of thermal energy. ...
Events: - Temecula Valley Astronomers
... We still have to answer the question of Pluto’s status. Is Pluto a planet or not? In the early 2000s Caltech’s Mike Brown discovered small objects in the outer reaches of the Solar System, well beyond Neptune’s orbit. One of these objects turned out to be about the size of Pluto. The new object was ...
... We still have to answer the question of Pluto’s status. Is Pluto a planet or not? In the early 2000s Caltech’s Mike Brown discovered small objects in the outer reaches of the Solar System, well beyond Neptune’s orbit. One of these objects turned out to be about the size of Pluto. The new object was ...
pluto: a human comedy
... other volatile gases to have condensed as ices. They are all small and rocky. The second group, called the Jovian planets, consists of Jupiter, Saturn, Uranus, and Neptune. Being farther away from the Sun, their cores probably grew from a mixture of rock and ices, which later captured significant am ...
... other volatile gases to have condensed as ices. They are all small and rocky. The second group, called the Jovian planets, consists of Jupiter, Saturn, Uranus, and Neptune. Being farther away from the Sun, their cores probably grew from a mixture of rock and ices, which later captured significant am ...
IS Chapter 14 Notes
... Origin of the moon – best theory is the Collision-ring Theory stating a planet sized object collided with the Earth. Material from the object and Earth’s outer layer was ejected into orbit around Earth where a ring was formed. Gravity caused this material to clump together forming the moon ...
... Origin of the moon – best theory is the Collision-ring Theory stating a planet sized object collided with the Earth. Material from the object and Earth’s outer layer was ejected into orbit around Earth where a ring was formed. Gravity caused this material to clump together forming the moon ...
Astro 10: Introductory Astronomy
... active area of research • Inner planets – formed by rocky material inside “frost line” • Outer planets – formed by hydrogen compound ices as “seeds”, and since H is most of the proto-solar system, these planets are large • Beyond, is Kuiper Belt of 10’s of thousands of giant ice cores • 100x further ...
... active area of research • Inner planets – formed by rocky material inside “frost line” • Outer planets – formed by hydrogen compound ices as “seeds”, and since H is most of the proto-solar system, these planets are large • Beyond, is Kuiper Belt of 10’s of thousands of giant ice cores • 100x further ...
Satellites - Deans Community High School
... Evidence for the Big Bang is that we can see that the universe is still expanding as stars get further apart. ...
... Evidence for the Big Bang is that we can see that the universe is still expanding as stars get further apart. ...
Winter Interim Assessment Review
... •Asteroid belt- region of the solar system between Jupiter and Mars. •Kuiper belt- extends to about 100 times Earth’s distance from the sun. •Oort cloud- stretches out more than 1,000 times the distance between the sun and Neptune. DWARF PLANETS •These objects orbit the sun and have enough gravity t ...
... •Asteroid belt- region of the solar system between Jupiter and Mars. •Kuiper belt- extends to about 100 times Earth’s distance from the sun. •Oort cloud- stretches out more than 1,000 times the distance between the sun and Neptune. DWARF PLANETS •These objects orbit the sun and have enough gravity t ...
6TH GRADE ACCURATE PLANET SIZES AND DISTANCE FROM
... mnemonic: My Very Excellent Mother Just Served Us Nachos (Please used to stand for Pluto). The first four planets; Mercury, Venus, Earth, and Mars, are the terrestrial planets. These planets are made of rock and are close to the Sun, relatively small, and similarly sized. The next four planets; Jupi ...
... mnemonic: My Very Excellent Mother Just Served Us Nachos (Please used to stand for Pluto). The first four planets; Mercury, Venus, Earth, and Mars, are the terrestrial planets. These planets are made of rock and are close to the Sun, relatively small, and similarly sized. The next four planets; Jupi ...
Additional Exercises for Chapter 4 Computations of Copernicus and
... to Figure 4.33 and focus on the angular position α of Venus. Starting from α = 0, how many days does it take for Venus to revolve through the first 60◦ = π3 ? How many days for the second 60◦ = π3 , and how many for the third 60◦ = π3 ? Ans: 37.03 days; 74.48 − 37.03 = 37.45 days; 112.35 − 74.48 = 3 ...
... to Figure 4.33 and focus on the angular position α of Venus. Starting from α = 0, how many days does it take for Venus to revolve through the first 60◦ = π3 ? How many days for the second 60◦ = π3 , and how many for the third 60◦ = π3 ? Ans: 37.03 days; 74.48 − 37.03 = 37.45 days; 112.35 − 74.48 = 3 ...
15_LectureOutline
... 15.4 Interplanetary Debris Icy planetesimals far from the Sun were ejected into distant orbits by gravitational interaction with the jovian planets, into the Kuiper belt and the Oort cloud. Some were left with extremely eccentric orbits and appear in the inner solar system as comets. ...
... 15.4 Interplanetary Debris Icy planetesimals far from the Sun were ejected into distant orbits by gravitational interaction with the jovian planets, into the Kuiper belt and the Oort cloud. Some were left with extremely eccentric orbits and appear in the inner solar system as comets. ...
Triple Conjunction of Jupiter and Saturn
... those proposed by Parpola, although they are fairly close. There are some software which can be used to track the movements of planets in any year, including 7 BC, and someone presented these conjunctions at the Foundation a year ago. However, I was not sure if these computer programs calculate the ...
... those proposed by Parpola, although they are fairly close. There are some software which can be used to track the movements of planets in any year, including 7 BC, and someone presented these conjunctions at the Foundation a year ago. However, I was not sure if these computer programs calculate the ...
Where are you - Musées de la Ville de Genève
... Until the 18th century, surveyors and mapmakers drew their plans and maps using a plane table. This was very simple to use and didn’t require complicated calculations. Using the plane table, directions found with the help of an alidade, a kind of sighting device, could be transcribed immediately ont ...
... Until the 18th century, surveyors and mapmakers drew their plans and maps using a plane table. This was very simple to use and didn’t require complicated calculations. Using the plane table, directions found with the help of an alidade, a kind of sighting device, could be transcribed immediately ont ...
A Triple Conjunction
... It was in 1968 when Roger Sinnott wrote a highly influential article in Sky and Telescope pointing to the June 17th 2 BC conjunction of Venus and Jupiter as having been particularly spectacular from Babylon that this theory took off. Sinnott’s work is still one of the finest ever carried out in this ...
... It was in 1968 when Roger Sinnott wrote a highly influential article in Sky and Telescope pointing to the June 17th 2 BC conjunction of Venus and Jupiter as having been particularly spectacular from Babylon that this theory took off. Sinnott’s work is still one of the finest ever carried out in this ...
Astronomy - Core Knowledge UK
... This lesson is the first in a series that introduces Year 4 children to the topic of astronomy. By its nature, this is both quite a difficult topic for children but also hugely fascinating. In this lesson, children will learn a bit about the origins of the Universe, and also the range of galaxies th ...
... This lesson is the first in a series that introduces Year 4 children to the topic of astronomy. By its nature, this is both quite a difficult topic for children but also hugely fascinating. In this lesson, children will learn a bit about the origins of the Universe, and also the range of galaxies th ...
Our Solar System and Beyond
... • How do we explain the existence of Earth’s moon and other exceptions to the rules? — The bombardment of newly formed planets by planetesimals may explain the exceptions. — Material torn from Earth’s crust by a giant impact formed the Moon. • When did the planets form? — Radiometric dating indicate ...
... • How do we explain the existence of Earth’s moon and other exceptions to the rules? — The bombardment of newly formed planets by planetesimals may explain the exceptions. — Material torn from Earth’s crust by a giant impact formed the Moon. • When did the planets form? — Radiometric dating indicate ...
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.