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Computer Lecture Notes
... The positional accuracy of catalogues before Brahe typically is of the order of a degree. Ptolemaios’ catalogue dates to about 150 AD, somewhat less than 2000 yr ago. A similar reasoning as the one above shows that the required accuracy of proper motion in the modern catalogue is 60 /2000 yr = 0.180 ...
... The positional accuracy of catalogues before Brahe typically is of the order of a degree. Ptolemaios’ catalogue dates to about 150 AD, somewhat less than 2000 yr ago. A similar reasoning as the one above shows that the required accuracy of proper motion in the modern catalogue is 60 /2000 yr = 0.180 ...
Transit detecion on eclipsing binary systems
... statistics C is obtained from a scalar multiplication of the vectors representing model-lc and observed data. Jenkins et al. present this TDA in the context of the transit detection of EBs TEP project (1994-2000; Deeg et al 1998,Doyle et al 2000.) detection statistics is obtained from a comparison o ...
... statistics C is obtained from a scalar multiplication of the vectors representing model-lc and observed data. Jenkins et al. present this TDA in the context of the transit detection of EBs TEP project (1994-2000; Deeg et al 1998,Doyle et al 2000.) detection statistics is obtained from a comparison o ...
Hands-On Activities
... Mars: the fourth planet from the Sun in the solar system, named after the Roman god of war (the counterpart of the Greek Ares), on account of its blood red color as viewed in the night sky. Mercury: The innermost and smallest planet in the solar system (since Pluto was re-labeled as a dwarf planet), ...
... Mars: the fourth planet from the Sun in the solar system, named after the Roman god of war (the counterpart of the Greek Ares), on account of its blood red color as viewed in the night sky. Mercury: The innermost and smallest planet in the solar system (since Pluto was re-labeled as a dwarf planet), ...
s-process
... Significant production of r-process elements began when the metallicity of the Galaxy reached [Fe/H] = -3. The heavy n-capture elements were formed predominantly by the r-process at metallicities below [Fe/H] = -2.1. Elements from the s-process appear at a metallicity of [Fe/H] = -2.1, when low-mass ...
... Significant production of r-process elements began when the metallicity of the Galaxy reached [Fe/H] = -3. The heavy n-capture elements were formed predominantly by the r-process at metallicities below [Fe/H] = -2.1. Elements from the s-process appear at a metallicity of [Fe/H] = -2.1, when low-mass ...
The attractive force of gravity between two
... Newton’s law of gravitation states that there is a force between every pair of particles, of any mass, in the universe. This force is called the gravitational force, and it causes objects to attract one another. The force does not require direct contact. The Earth attracts the Sun, and the Sun attra ...
... Newton’s law of gravitation states that there is a force between every pair of particles, of any mass, in the universe. This force is called the gravitational force, and it causes objects to attract one another. The force does not require direct contact. The Earth attracts the Sun, and the Sun attra ...
Constituents of the Milky Way
... Measuring Ages of Individual Stars For individual stars that aren’t in clusters (like the Sun), we can’t use the cluster turnoff method to measure an age. For instance, a lone G star might be young, or it might be 10 billion years old. How do we measure its age? The universe contained only hydrogen ...
... Measuring Ages of Individual Stars For individual stars that aren’t in clusters (like the Sun), we can’t use the cluster turnoff method to measure an age. For instance, a lone G star might be young, or it might be 10 billion years old. How do we measure its age? The universe contained only hydrogen ...
Asteroids and Comets - Wayne State University
... because they are too faint to be seen directly and because their stable orbit do not bring them closer to the Sun The total number of comets within the sphere of influence of our Sun could therefore be on the order of ten trillion (1013)! Their total mass would be similar to that of 1000 Earths Come ...
... because they are too faint to be seen directly and because their stable orbit do not bring them closer to the Sun The total number of comets within the sphere of influence of our Sun could therefore be on the order of ten trillion (1013)! Their total mass would be similar to that of 1000 Earths Come ...
Full Poster - Cool Cosmos
... emitted or reflected by objects in space. Apart from a few exceptions, such as the collection of moon rocks, astronomers must rely on collecting and analyzing the faint light from distant objects in order to study the cosmos. This fact is even more remarkable when you consider the vastness of space. ...
... emitted or reflected by objects in space. Apart from a few exceptions, such as the collection of moon rocks, astronomers must rely on collecting and analyzing the faint light from distant objects in order to study the cosmos. This fact is even more remarkable when you consider the vastness of space. ...
astronomy practice test ch 9
... 22. ____________________ can be used to determine the distance to a star when the spectrum of the star can be used to determine its spectral type and luminosity class. ...
... 22. ____________________ can be used to determine the distance to a star when the spectrum of the star can be used to determine its spectral type and luminosity class. ...
Venus The surface of Venus was scanned with radar waves beamed
... measured its atmospheric pressure, and determined the composition of rocks on its surface. Four unmanned spacecraft reached Venus in December 1978. The United States craft Pioneer Venus 1 began orbiting the planet on December 4. This craft transmitted radar images of Venus, produced a map of its sur ...
... measured its atmospheric pressure, and determined the composition of rocks on its surface. Four unmanned spacecraft reached Venus in December 1978. The United States craft Pioneer Venus 1 began orbiting the planet on December 4. This craft transmitted radar images of Venus, produced a map of its sur ...
The Kuiper Belt
... Sedna has been estimated to have more than half the diameter of Pluto and may be larger than any other planetary body found since Pluto -- at 730 to 1,470 miles or 1,180 to 2,360 kilometers (km) across, compared to Pluto's diameter of around 1,440 miles or 2,320 km. ...
... Sedna has been estimated to have more than half the diameter of Pluto and may be larger than any other planetary body found since Pluto -- at 730 to 1,470 miles or 1,180 to 2,360 kilometers (km) across, compared to Pluto's diameter of around 1,440 miles or 2,320 km. ...
as a PDF
... with the orbital separation a. For a Jupiter-sized object and a separation of 1 AU the planet/star contrast to be achieved is on the order of 10-8 for a successful detection. This is much more demanding than the direct imaging of young selfluminous planets. Therefore SPHERE-ZIMPOL will be capable to ...
... with the orbital separation a. For a Jupiter-sized object and a separation of 1 AU the planet/star contrast to be achieved is on the order of 10-8 for a successful detection. This is much more demanding than the direct imaging of young selfluminous planets. Therefore SPHERE-ZIMPOL will be capable to ...
1 solar and stellar abundances of the elements
... ASTRONOMERS,nuclear physicists, and cosmologists have long sought to determine the "cosmic" abundances of the elements, i.e. the chemical composition of stars and gaseous nebulae in our part of the galaxy. In this contribution we shall be especially concerned with the composition of the sun which pr ...
... ASTRONOMERS,nuclear physicists, and cosmologists have long sought to determine the "cosmic" abundances of the elements, i.e. the chemical composition of stars and gaseous nebulae in our part of the galaxy. In this contribution we shall be especially concerned with the composition of the sun which pr ...
8-4.9 - S2TEM Centers SC
... dust, and gas held together by the force of gravity. They should also be aware that not all galaxies look the same. 4. Provide students with copies of the activity sheet and the trading cards. Tell them the cards have images of galaxies on one side and information about the galaxies and the constell ...
... dust, and gas held together by the force of gravity. They should also be aware that not all galaxies look the same. 4. Provide students with copies of the activity sheet and the trading cards. Tell them the cards have images of galaxies on one side and information about the galaxies and the constell ...
a copy of the wedding program here
... accounts for 99.86% of the mass in our Solar System. Within the Sun’s center, the pressure is so great that hydrogen atoms, the first element on the periodic table, are pushed together to form helium atoms, the second element. Because four hydrogen atoms have a combined mass of 4.0312 amu, and the s ...
... accounts for 99.86% of the mass in our Solar System. Within the Sun’s center, the pressure is so great that hydrogen atoms, the first element on the periodic table, are pushed together to form helium atoms, the second element. Because four hydrogen atoms have a combined mass of 4.0312 amu, and the s ...
Starry Night Companion - Starry Night Education
... learn how high above the horizon is 10°, how high is 30°, and so on. Although the horizon co-ordinate system is the easiest to understand, it is not necessarily the most useful system. This is because it is a “local” system, and the co-ordinates depend on your personal location. Jupiter, for example ...
... learn how high above the horizon is 10°, how high is 30°, and so on. Although the horizon co-ordinate system is the easiest to understand, it is not necessarily the most useful system. This is because it is a “local” system, and the co-ordinates depend on your personal location. Jupiter, for example ...
THE MOON - HMXEarthScience
... 62. Base your answer to the following question on the passage below. A Newly Discovered Planet 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 c ...
... 62. Base your answer to the following question on the passage below. A Newly Discovered Planet 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 c ...
53.3 A New View of Gravity • What is gravity?
... effect called gravita tional time diiation (Note that the effect occurs even in a uniform gravitational field; that is, it does not depend on the additionai fact that gravity tends to weaken at higher altitudes.) ...
... effect called gravita tional time diiation (Note that the effect occurs even in a uniform gravitational field; that is, it does not depend on the additionai fact that gravity tends to weaken at higher altitudes.) ...
Beyond the Big Bang - Physics Department, Princeton University
... next. The big surprise is that this is not the case. The inflationary and cyclic models both incorporate Act Two, but they sandwich it between completely different first and third acts. In the case of the cyclic model, Act Three is not even the final act: the plot eventually leads to a new Act One, ...
... next. The big surprise is that this is not the case. The inflationary and cyclic models both incorporate Act Two, but they sandwich it between completely different first and third acts. In the case of the cyclic model, Act Three is not even the final act: the plot eventually leads to a new Act One, ...
EVERYTHING YOU EVER WANTED TO KNOW ABOUT GAIA!
... positions, and velocities of stars in our Galaxy, the Milky Way, to create the most accurate 3-D picture of our Galaxy that we've ever had. Why bother measuring distances and velocities? Because knowing the distance to a star allows us to determine many of the essential properties (age, mass, true l ...
... positions, and velocities of stars in our Galaxy, the Milky Way, to create the most accurate 3-D picture of our Galaxy that we've ever had. Why bother measuring distances and velocities? Because knowing the distance to a star allows us to determine many of the essential properties (age, mass, true l ...
everything you ever wanted to know about gaia! - Cosmos
... positions, and velocities of stars in our Galaxy, the Milky Way, to create the most accurate 3-D picture of our Galaxy that we've ever had. Why bother measuring distances and velocities? Because knowing the distance to a star allows us to determine many of the essential properties (age, mass, true l ...
... positions, and velocities of stars in our Galaxy, the Milky Way, to create the most accurate 3-D picture of our Galaxy that we've ever had. Why bother measuring distances and velocities? Because knowing the distance to a star allows us to determine many of the essential properties (age, mass, true l ...
NATS 1311-From the Cosmos to Earth
... – For the convenience of the study of science, the subject is frequently divided into neat packages called biology, chemistry, geology, physics, astronomy --– Nature is not so divided - Each scientific discipline views nature from a different perspective, but all are studying the same world. ...
... – For the convenience of the study of science, the subject is frequently divided into neat packages called biology, chemistry, geology, physics, astronomy --– Nature is not so divided - Each scientific discipline views nature from a different perspective, but all are studying the same world. ...
I Have Who Has Science cards
... I have frogs and butterflies. Who has what all animals need in order to live and grow besides food, water, and shelter? ...
... I have frogs and butterflies. Who has what all animals need in order to live and grow besides food, water, and shelter? ...
Earth-Sky Relationships and the Celestial Sphere
... dividing line on the sky the Celestial Equator, and it is represented on your celestial sphere as the “seam” between the bottom and top halves of the sphere. We know that the poles of the Earth are the points on the Earth that are the center of our daily rotation. Similarly, the Celestial poles are ...
... dividing line on the sky the Celestial Equator, and it is represented on your celestial sphere as the “seam” between the bottom and top halves of the sphere. We know that the poles of the Earth are the points on the Earth that are the center of our daily rotation. Similarly, the Celestial poles are ...
Mercury Transits on 9th May-2016
... illuminated by the Sun - and see it as a small dark spot moving across the bright solar disk. A powerful telescope is needed to observe this event and to show clearly how Mercury moves across the solar disk. During the transit, Mercury will only block 1/20,000th of the Sun's light. The German astron ...
... illuminated by the Sun - and see it as a small dark spot moving across the bright solar disk. A powerful telescope is needed to observe this event and to show clearly how Mercury moves across the solar disk. During the transit, Mercury will only block 1/20,000th of the Sun's light. The German astron ...
Extraterrestrial life
![](https://commons.wikimedia.org/wiki/Special:FilePath/White_House_position_on_ET.png?width=300)
Extraterrestrial life is life that does not originate from Earth. It is also called alien life, or, if it is a sentient and/or relatively complex individual, an ""extraterrestrial"" or ""alien"" (or, to avoid confusion with the legal sense of ""alien"", a ""space alien""). These as-yet-hypothetical life forms range from simple bacteria-like organisms to beings with civilizations far more advanced than humanity. Although many scientists expect extraterrestrial life to exist, so far no unambiguous evidence for its existence exists.The science of extraterrestrial life is known as exobiology. The science of astrobiology also considers life on Earth as well, and in the broader astronomical context. Meteorites that have fallen to Earth have sometimes been examined for signs of microscopic extraterrestrial life. Since the mid-20th century, there has been an ongoing search for signs of extraterrestrial intelligence, from radios used to detect possible extraterrestrial signals, to telescopes used to search for potentially habitable extrasolar planets. It has also played a major role in works of science fiction. Over the years, science fiction works, especially Hollywood's involvement, has increased the public's interest in the possibility of extraterrestrial life. Some encourage aggressive methods to try to get in contact with life in outer space, whereas others argue that it might be dangerous to actively call attention to Earth.