Problem Set #2
... where C is a constant. Compute the value of C in units of minutes. 2. Earth-orbiting communications and weather satellites are often put into geosynchronous orbits with a period of Porbit = 1 sidereal day. a. What is the semimajor axis, ags, of a geosynchronous orbit? b. What is the orbital velocity ...
... where C is a constant. Compute the value of C in units of minutes. 2. Earth-orbiting communications and weather satellites are often put into geosynchronous orbits with a period of Porbit = 1 sidereal day. a. What is the semimajor axis, ags, of a geosynchronous orbit? b. What is the orbital velocity ...
New Moons for Pluto!
... are about twice as far away from Pluto as Charon, but still close to the planet. A second image of Pluto taken three days later showed the objects in the same area. Scientists thought the objects were two new moons. However, they had to confirm that the objects really were moons and not just icy roc ...
... are about twice as far away from Pluto as Charon, but still close to the planet. A second image of Pluto taken three days later showed the objects in the same area. Scientists thought the objects were two new moons. However, they had to confirm that the objects really were moons and not just icy roc ...
Resources: - Real Science
... Scientists have found water on the planet __ another star. This is the first time this key _________ for living things has been found on an extrasolar planet. More than 200 extrasolar planets have ____ discovered so far. These are planets in orbit around _ star, in the same way as our Earth is __ or ...
... Scientists have found water on the planet __ another star. This is the first time this key _________ for living things has been found on an extrasolar planet. More than 200 extrasolar planets have ____ discovered so far. These are planets in orbit around _ star, in the same way as our Earth is __ or ...
91KB - NZQA
... nuclear fusion) to form helium and release energy. Rigel’s time on the main sequence will be relatively short due to its massive initial mass and it will run out of its fuel quickly. As Rigel runs out of hydrogen as the fuel source, the star is massive enough to fuse the other elements of the period ...
... nuclear fusion) to form helium and release energy. Rigel’s time on the main sequence will be relatively short due to its massive initial mass and it will run out of its fuel quickly. As Rigel runs out of hydrogen as the fuel source, the star is massive enough to fuse the other elements of the period ...
Formation of the Solar System
... the collapsing cloud, the outer, cooler regions of the cloud swirl around the central protostar in a disk-like structure called the solar nebula. An advanced theory, called the condensation theory, includes the nebular theory but also incorporates interstellar dust as an essential ingredient in the ...
... the collapsing cloud, the outer, cooler regions of the cloud swirl around the central protostar in a disk-like structure called the solar nebula. An advanced theory, called the condensation theory, includes the nebular theory but also incorporates interstellar dust as an essential ingredient in the ...
145KB - NZQA
... nuclear fusion) to form helium and release energy. Rigel’s time on the main sequence will be relatively short due to its massive initial mass and it will run out of its fuel quickly. As Rigel runs out of hydrogen as the fuel source, the star is massive enough to fuse the other elements of the period ...
... nuclear fusion) to form helium and release energy. Rigel’s time on the main sequence will be relatively short due to its massive initial mass and it will run out of its fuel quickly. As Rigel runs out of hydrogen as the fuel source, the star is massive enough to fuse the other elements of the period ...
Scientific American`s Ask the Experts
... the asteroid belt on its way to Jupiter. But it took some effort to find an object that was located even roughly along Galileo’s path. Special targeting was required to reach this object, but the result was the first close-up view of an asteroid, the one called Gaspra. The number of objects in the ast ...
... the asteroid belt on its way to Jupiter. But it took some effort to find an object that was located even roughly along Galileo’s path. Special targeting was required to reach this object, but the result was the first close-up view of an asteroid, the one called Gaspra. The number of objects in the ast ...
Earth-moon-sun
... For thousands of years, people believed that the Earth was the center of the universe. Copernicus, Galileo, and other scientists determined that the Earth and other planets revolved around the Sun. ...
... For thousands of years, people believed that the Earth was the center of the universe. Copernicus, Galileo, and other scientists determined that the Earth and other planets revolved around the Sun. ...
3-planets-of-the-solar-system
... 1. How does the period of revolution of Hermes compare to the period of revolution of the planets shown in the diagram? A) Hermes has a longer period of revolution than Mercury, but a shorter period of revolution than Venus, Earth, and Mars. B) Hermes has a shorter period of revolution than Mercury ...
... 1. How does the period of revolution of Hermes compare to the period of revolution of the planets shown in the diagram? A) Hermes has a longer period of revolution than Mercury, but a shorter period of revolution than Venus, Earth, and Mars. B) Hermes has a shorter period of revolution than Mercury ...
Moons
... been discovered on 1877. Phobos means fear. They are small rocks left over from the birth of the planets. Phobos is 27 km across at its widest point and has a large impact crater on one side. It flies around mars three times in one Martian day. Phobos may once have been asteroids that orbited the su ...
... been discovered on 1877. Phobos means fear. They are small rocks left over from the birth of the planets. Phobos is 27 km across at its widest point and has a large impact crater on one side. It flies around mars three times in one Martian day. Phobos may once have been asteroids that orbited the su ...
Dense (> 3000 kg/m 3 )
... Asteroids are small, rocky objects, while comets and trans-Neptunian objects are made of ice and rock. All are remnants left over from the formation of the planets. Most asteroids are found in the asteroid belt between the orbits of Mars and Jupiter, and most trans-Neptunian objects lie in the Kuipe ...
... Asteroids are small, rocky objects, while comets and trans-Neptunian objects are made of ice and rock. All are remnants left over from the formation of the planets. Most asteroids are found in the asteroid belt between the orbits of Mars and Jupiter, and most trans-Neptunian objects lie in the Kuipe ...
Solar System Exploration
... Students will refer to the planetary note page in their booklets as the guiding questions for the presentation. They will watch a presentation using Magic Planet (a digital globe to help students visualize the various planets). The focus will be on space exploration, the Sun & the eight planets of t ...
... Students will refer to the planetary note page in their booklets as the guiding questions for the presentation. They will watch a presentation using Magic Planet (a digital globe to help students visualize the various planets). The focus will be on space exploration, the Sun & the eight planets of t ...
Accuracy of the Astronomical Unit
... properties of orbital motion have been well understood since the time Johannes Kepler (1571 - 1630) first proposed his three laws of planetary motion nearly four centuries ago. In this section we will investigate each of Kepler’s laws of planetary motion in order to better understand how spacecraft ...
... properties of orbital motion have been well understood since the time Johannes Kepler (1571 - 1630) first proposed his three laws of planetary motion nearly four centuries ago. In this section we will investigate each of Kepler’s laws of planetary motion in order to better understand how spacecraft ...
3-planets-of-the-solar-system
... Scientists studying a Sun-like star named Ogle-Tr-3 discovered a planet that is, on the average, 3.5 million kilometers away from the star’s surface. The planet was discovered as a result of observing a cyclic decrease in the brightness of Ogle-Tr-3 every 28.5 hours. The changing brightness is the r ...
... Scientists studying a Sun-like star named Ogle-Tr-3 discovered a planet that is, on the average, 3.5 million kilometers away from the star’s surface. The planet was discovered as a result of observing a cyclic decrease in the brightness of Ogle-Tr-3 every 28.5 hours. The changing brightness is the r ...
Interplanetary Space Travel Accuracy of the Astronomical Unit When
... properties of orbital motion have been well understood since the time Johannes Kepler (1571 - 1630) first proposed his three laws of planetary motion nearly four centuries ago. In this section we will investigate each of Kepler’s laws of planetary motion in order to better understand how spacecraft ...
... properties of orbital motion have been well understood since the time Johannes Kepler (1571 - 1630) first proposed his three laws of planetary motion nearly four centuries ago. In this section we will investigate each of Kepler’s laws of planetary motion in order to better understand how spacecraft ...
Samenvatting ANW SPU set 3 Chapter 2: The Earth What are
... Dwarf planets are a category of solar system bodies created by the International Astronomical Union in 2006 to describe objects orbiting the Sun that are big and heavy enough to resemble a planet, but not big enough to 'clear' a free path on its orbit. What is the difference between an inner and an ...
... Dwarf planets are a category of solar system bodies created by the International Astronomical Union in 2006 to describe objects orbiting the Sun that are big and heavy enough to resemble a planet, but not big enough to 'clear' a free path on its orbit. What is the difference between an inner and an ...
The Search for Worlds Like Our Own
... commonly referred to as the Darwin mission study (Fridlund, 2000), which uses the new technology of nulling (or destructive on-axis) interferometry (Bracewell, 1978; Bracewell and MacPhie, 1979). For the Darwin study, the spectral region between 6 and 20 mm was chosen. This is a region that contains ...
... commonly referred to as the Darwin mission study (Fridlund, 2000), which uses the new technology of nulling (or destructive on-axis) interferometry (Bracewell, 1978; Bracewell and MacPhie, 1979). For the Darwin study, the spectral region between 6 and 20 mm was chosen. This is a region that contains ...
Why was Pluto once considered a planet?
... • Percival Lowell made calculations which later turned out to be in error that predicted a planet beyond Neptune, based on the motions of Uranus and Neptune. • Not N t kknowing i off the th error, Clyde Cl d W. W Tombaugh T b h att Lowell L ll Observatory in Arizona did a very careful sky survey. Fo ...
... • Percival Lowell made calculations which later turned out to be in error that predicted a planet beyond Neptune, based on the motions of Uranus and Neptune. • Not N t kknowing i off the th error, Clyde Cl d W. W Tombaugh T b h att Lowell L ll Observatory in Arizona did a very careful sky survey. Fo ...
Theme 7.1 -- The Formation of the Solar System
... And you might argue that perhaps there could be a couple more beyond Saturn. Subsequent discoveries had mixed implications for Bode's law. Uranus, found in 1781, agreed pretty well. Twenty years after that, in 1801, a search for a planet at the 2.8 position uncovered an object called Ceres, which s ...
... And you might argue that perhaps there could be a couple more beyond Saturn. Subsequent discoveries had mixed implications for Bode's law. Uranus, found in 1781, agreed pretty well. Twenty years after that, in 1801, a search for a planet at the 2.8 position uncovered an object called Ceres, which s ...
Meteors and Comets
... Scientists try to predict when comets will come too close to Earth Sometimes comets collide with planets and their moons Haley’s Comet is the most famous comet, it passes by Earth every 76 years – the last time it passed by Earth was in 1986 When Earth crosses the path of a comet, leftover dust and ...
... Scientists try to predict when comets will come too close to Earth Sometimes comets collide with planets and their moons Haley’s Comet is the most famous comet, it passes by Earth every 76 years – the last time it passed by Earth was in 1986 When Earth crosses the path of a comet, leftover dust and ...
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... Pupils may complete the summary as follows: Astronomers are excited, because a new solar system with seven planets has been found. The planets circle around a dwarf star, called Trappist-1. Astronomers found the dwarf star Trappist-1 with a telescope. When they looked at it with stronger and bigger ...
... Pupils may complete the summary as follows: Astronomers are excited, because a new solar system with seven planets has been found. The planets circle around a dwarf star, called Trappist-1. Astronomers found the dwarf star Trappist-1 with a telescope. When they looked at it with stronger and bigger ...
Definition of planet
The definition of planet, since the word was coined by the ancient Greeks, has included within its scope a wide range of celestial bodies. Greek astronomers employed the term asteres planetai (ἀστέρες πλανῆται), ""wandering stars"", for star-like objects which apparently moved over the sky. Over the millennia, the term has included a variety of different objects, from the Sun and the Moon to satellites and asteroids.By the end of the 19th century the word planet, though it had yet to be defined, had become a working term applied only to a small set of objects in the Solar System. After 1992, however, astronomers began to discover many additional objects beyond the orbit of Neptune, as well as hundreds of objects orbiting other stars. These discoveries not only increased the number of potential planets, but also expanded their variety and peculiarity. Some were nearly large enough to be stars, while others were smaller than Earth's moon. These discoveries challenged long-perceived notions of what a planet could be.The issue of a clear definition for planet came to a head in 2005 with the discovery of the trans-Neptunian object Eris, a body more massive than the smallest then-accepted planet, Pluto. In its 2006 response, the International Astronomical Union (IAU), recognised by astronomers as the world body responsible for resolving issues of nomenclature, released its decision on the matter. This definition, which applies only to the Solar System, states that a planet is a body that orbits the Sun, is massive enough for its own gravity to make it round, and has ""cleared its neighbourhood"" of smaller objects around its orbit. Under this new definition, Pluto and the other trans-Neptunian objects do not qualify as planets. The IAU's decision has not resolved all controversies, and while many scientists have accepted the definition, some in the astronomical community have rejected it outright.