Exploring Space
... When Leavitt went back to work in 1902, she was assigned the job of cataloging Cepheids (se-FEE-ids), which are stars that regularly brighten and dim. She observed more than 20 of these unusual stars using telescope photographs of stars outside of our galaxy. Several years before Hale’s 100-inch tel ...
... When Leavitt went back to work in 1902, she was assigned the job of cataloging Cepheids (se-FEE-ids), which are stars that regularly brighten and dim. She observed more than 20 of these unusual stars using telescope photographs of stars outside of our galaxy. Several years before Hale’s 100-inch tel ...
The Solar Nebula Theory
... • interstellar cloud – gravity takes over • angular momentum – disk formation ...
... • interstellar cloud – gravity takes over • angular momentum – disk formation ...
Chapter 16 - Follow “Ironmtn.wordpress.com”
... 56. What is the long-range impact of space debris and rock falling to Earth each day? What is the impact of this same material in outer space to the space program? Ans: Answers will vary but should include information about foreign biological materials which could be found within meteorites, small i ...
... 56. What is the long-range impact of space debris and rock falling to Earth each day? What is the impact of this same material in outer space to the space program? Ans: Answers will vary but should include information about foreign biological materials which could be found within meteorites, small i ...
Newton`s Law of Universal Gravitation
... by its moon. The tides result from the difference between the gravitational force at Earth’s surface and at Earth’s center. A full explanation is beyond the scope of this text, but we will briefly examine this relationship. The two high tides take place at locations on Earth that are nearly in line ...
... by its moon. The tides result from the difference between the gravitational force at Earth’s surface and at Earth’s center. A full explanation is beyond the scope of this text, but we will briefly examine this relationship. The two high tides take place at locations on Earth that are nearly in line ...
Transit surveys for Earths in the habitable zones of white dwarfs
... (e.g., Nordhaus et al. 2010). Planets present in the white dwarf habitable zone (WDHZ) must arrive after this phase. This may occur via several paths (Faedi et al. 2010): planets can form out of gas near the white dwarf, via the interaction or merger of binary stars (Livio et al. 2005), or by captur ...
... (e.g., Nordhaus et al. 2010). Planets present in the white dwarf habitable zone (WDHZ) must arrive after this phase. This may occur via several paths (Faedi et al. 2010): planets can form out of gas near the white dwarf, via the interaction or merger of binary stars (Livio et al. 2005), or by captur ...
Core instability models of giant planet accretion – II. Forming
... system. The extrasolar planets found since 1995 have vastly expanded our data base by increasing the number of known planets by more than 200. Although the distribution of masses and semimajor axis of observed extrasolar planets is highly biased towards those planets that are detectable using Dopple ...
... system. The extrasolar planets found since 1995 have vastly expanded our data base by increasing the number of known planets by more than 200. Although the distribution of masses and semimajor axis of observed extrasolar planets is highly biased towards those planets that are detectable using Dopple ...
Overview Orientation of the Night Sky Figure 1:
... West. Thus, the H.A. of a star, planet, the Sun, or the Moon continuously increases by about 15 degrees per hour (360° in 24 hours due to Earth’s rotation) as it moves westward across the sky. We define hour angle to be negative (backwards in time) on the left side of the meridian, i.e., in the east ...
... West. Thus, the H.A. of a star, planet, the Sun, or the Moon continuously increases by about 15 degrees per hour (360° in 24 hours due to Earth’s rotation) as it moves westward across the sky. We define hour angle to be negative (backwards in time) on the left side of the meridian, i.e., in the east ...
Exam 2
... Planetary nebulae cannot be seen with the naked eye. Indeed, the study of these objects did not begin seriously until long after the invention of the telescope. Observations of planetary nebulae have been hampered by the fact that these objects have very low surface brightness and so tend to fade in ...
... Planetary nebulae cannot be seen with the naked eye. Indeed, the study of these objects did not begin seriously until long after the invention of the telescope. Observations of planetary nebulae have been hampered by the fact that these objects have very low surface brightness and so tend to fade in ...
A Human-Powered Orrery: Connecting Learners with the Night Sky*
... long as 45 minutes to set up, similar to the one in the YouTube video. We have used this only when we have extra time such as an overnight with lots of help. However, this model could also be the basis for a more permanent model on a playground, for example. The scale for this model is 1 m = 100,000 ...
... long as 45 minutes to set up, similar to the one in the YouTube video. We have used this only when we have extra time such as an overnight with lots of help. However, this model could also be the basis for a more permanent model on a playground, for example. The scale for this model is 1 m = 100,000 ...
On disc driven inward migration of resonantly coupled planets with
... mass. The ratio of semi-major axes a1 /a2 of the planets decreases until the planets “lock” into a 2:1 commensurability with n2 ≈ 2n1 at a time t ≈ 400 orbits. Both planets then subsequently migrate inwards a further 10% maintaining this ratio, showing the resonance to be robust. Figure 1 also shows ...
... mass. The ratio of semi-major axes a1 /a2 of the planets decreases until the planets “lock” into a 2:1 commensurability with n2 ≈ 2n1 at a time t ≈ 400 orbits. Both planets then subsequently migrate inwards a further 10% maintaining this ratio, showing the resonance to be robust. Figure 1 also shows ...
Script
... The transit method also makes it possible to study the atmosphere of the transiting planet. When the planet transits the star, light from the star passes through the upper atmosphere of the planet. By studying the high-resolution stellar spectrum carefully, one can detect elements present in the pla ...
... The transit method also makes it possible to study the atmosphere of the transiting planet. When the planet transits the star, light from the star passes through the upper atmosphere of the planet. By studying the high-resolution stellar spectrum carefully, one can detect elements present in the pla ...
Volcanoes and Igneous Activity Earth
... • Each has its own character • Callisto—Outermost Galilean moon • Europa—Smallest Galilean moon • Ganymede—Largest Jovian satellite • Io—Innermost Galilean moon and is also volcanically active © 2011 Pearson Education, Inc. ...
... • Each has its own character • Callisto—Outermost Galilean moon • Europa—Smallest Galilean moon • Ganymede—Largest Jovian satellite • Io—Innermost Galilean moon and is also volcanically active © 2011 Pearson Education, Inc. ...
October, 2006 - The Astronomical Society of Las Cruces
... Pluto makes two revolutions around the Sun in the same time as Neptune makes three, Pluto, Neptune, and the Sun will next align also with Pluto at aphelion. But this is not an exact condition, only approximate. Suppose that due to some disturbance, such as a gravitational perturbation by Jupiter, Sa ...
... Pluto makes two revolutions around the Sun in the same time as Neptune makes three, Pluto, Neptune, and the Sun will next align also with Pluto at aphelion. But this is not an exact condition, only approximate. Suppose that due to some disturbance, such as a gravitational perturbation by Jupiter, Sa ...
The Project Gutenberg EBook of History of Astronomy, by George
... astronomers. And we have not a particle of information about the discoveries, which may have been great, by other peoples—by the Druids, the Mexicans, and the Peruvians, for example. We do know this, that all nations required to have a calendar. The solar year, the lunar month, and the day were the ...
... astronomers. And we have not a particle of information about the discoveries, which may have been great, by other peoples—by the Druids, the Mexicans, and the Peruvians, for example. We do know this, that all nations required to have a calendar. The solar year, the lunar month, and the day were the ...
Astrobiological Stoichiometry
... of that element (by number) in the Sun. Elements heavier than He are termed ‘‘metals.’’ Because the Sun is considered to sample the average interstellar medium, it is presumed that all stars will share the Sun’s relative proportions of metals. The relative sizes of the boxes for C, O, etc., are pres ...
... of that element (by number) in the Sun. Elements heavier than He are termed ‘‘metals.’’ Because the Sun is considered to sample the average interstellar medium, it is presumed that all stars will share the Sun’s relative proportions of metals. The relative sizes of the boxes for C, O, etc., are pres ...
Solar System Moon Phases /Galactic Address
... Show the students how the Moon Phase Chart is modeled after the Orbit Spin Chart used during the demonstration, with the Sun, Earth and Moon in the same relative positions. Once assembled, the chart will show and name the pattern of Moon phases throughout a lunar month. For best results and particip ...
... Show the students how the Moon Phase Chart is modeled after the Orbit Spin Chart used during the demonstration, with the Sun, Earth and Moon in the same relative positions. Once assembled, the chart will show and name the pattern of Moon phases throughout a lunar month. For best results and particip ...
1 HABITABLE ZONES IN THE UNIVERSE GUILLERMO GONZALEZ
... Hart (1978, 1979) presented a detailed and mathematical study of the CHZ. He modeled the evolution of the Earth’s climate since its formation, including volcanic outgassing, atmospheric loss, the greenhouse effect, albedo variations, biomass variation, various geophysical processes, and the gradual ...
... Hart (1978, 1979) presented a detailed and mathematical study of the CHZ. He modeled the evolution of the Earth’s climate since its formation, including volcanic outgassing, atmospheric loss, the greenhouse effect, albedo variations, biomass variation, various geophysical processes, and the gradual ...
History of Astronomy
... historians, and for information about the Chinese we rely upon the researches of travellers and missionaries in comparatively recent times. The testimony of the Greek writers has fortunately been confirmed, and we now have in addition a mass of facts translated from the original sculptures, papyri, ...
... historians, and for information about the Chinese we rely upon the researches of travellers and missionaries in comparatively recent times. The testimony of the Greek writers has fortunately been confirmed, and we now have in addition a mass of facts translated from the original sculptures, papyri, ...
Pluto and the Galactic Center
... In order that the human being, though not yet able to enter the Jupiter region, may receive, between death and a new birth, something of the forces of Jupiter and also of Saturn, many asteroids are interspersed between Mars and Jupiter. In their outer aspect they are constantly being discovered by a ...
... In order that the human being, though not yet able to enter the Jupiter region, may receive, between death and a new birth, something of the forces of Jupiter and also of Saturn, many asteroids are interspersed between Mars and Jupiter. In their outer aspect they are constantly being discovered by a ...
May - RASC Hamilton
... further probe the surface of Mars, circle the gas giants and their moons, land on asteroids and collect comet dust, we continue to expand our knowledge. The latest discoveries about the sun, planets, moons and asteroids will be examined at Starfest this summer. We will also focus on how to maximize ...
... further probe the surface of Mars, circle the gas giants and their moons, land on asteroids and collect comet dust, we continue to expand our knowledge. The latest discoveries about the sun, planets, moons and asteroids will be examined at Starfest this summer. We will also focus on how to maximize ...
CHP 4
... A(n) _______________ is a single conjecture that can be tested. a. hypothesis b. paradigm c. natural law d. model e. theory A(n) _______________ is a description of some natural phenomenon that can't be right or wrong. It is merely a convenient way to think about a natural phenomenon. a. hypothesis ...
... A(n) _______________ is a single conjecture that can be tested. a. hypothesis b. paradigm c. natural law d. model e. theory A(n) _______________ is a description of some natural phenomenon that can't be right or wrong. It is merely a convenient way to think about a natural phenomenon. a. hypothesis ...
200 THE COPERNICAN REVOLUTION the opposition to
... as clear as Venus at its greatest brightness; during the next eighteen months the new occupant of the heavens grew gradually dimmer; and finally it vanished altogether early in 1574. From the start the new visitor drew the interest of scientists and nonscientists throughout Europe. It could not be a ...
... as clear as Venus at its greatest brightness; during the next eighteen months the new occupant of the heavens grew gradually dimmer; and finally it vanished altogether early in 1574. From the start the new visitor drew the interest of scientists and nonscientists throughout Europe. It could not be a ...
PowerPoint
... Now we need to define the often used term Astronomical Unit or AU. This is simply the average distance of the Earth to the Sun, which is also about the Earth’s Semi-Major axis. It is equal to 1.5 x 108 km. Then, we can say that Jupiter for example is 5.2 AU from the Sun, or 5.2 times the distance aw ...
... Now we need to define the often used term Astronomical Unit or AU. This is simply the average distance of the Earth to the Sun, which is also about the Earth’s Semi-Major axis. It is equal to 1.5 x 108 km. Then, we can say that Jupiter for example is 5.2 AU from the Sun, or 5.2 times the distance aw ...
June, 2001 AAS poster - David P. Bennett
... The gravitational microlensing signals of terrestrial planets are visible only in the light curves of main sequence stars. These stars are very crowded in the dense central Galactic bulge fields that are the prime target fields because of the enhanced microlensing rate and the line of sight through ...
... The gravitational microlensing signals of terrestrial planets are visible only in the light curves of main sequence stars. These stars are very crowded in the dense central Galactic bulge fields that are the prime target fields because of the enhanced microlensing rate and the line of sight through ...
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.