
Supplemental Educational Support Materials
... You might think that astronomers still would have discovered Xena because it is slightly larger than Pluto. This answer is incorrect. Xena is small and far away from Earth. Astronomers spotted Xena because it reflects lots of light. Xena is so far away that, if it did not reflect as much light as it ...
... You might think that astronomers still would have discovered Xena because it is slightly larger than Pluto. This answer is incorrect. Xena is small and far away from Earth. Astronomers spotted Xena because it reflects lots of light. Xena is so far away that, if it did not reflect as much light as it ...
Electronic version of lab manual 1-6 ()
... As with any equation, if you add/subtract/multiply by/divide by a value or a term on one side of the equal sign, you must perform the same operation on the other side, so that the two sides will remain equal. Note: If b = 0, then you only have to divide y by m to solve the equation for x. 1.) Think! ...
... As with any equation, if you add/subtract/multiply by/divide by a value or a term on one side of the equal sign, you must perform the same operation on the other side, so that the two sides will remain equal. Note: If b = 0, then you only have to divide y by m to solve the equation for x. 1.) Think! ...
Document
... Sun. Look for it above the sunset horizon far below and perhaps a bit right of Venus and Jupiter. Mercury remains at nearly the same place above your horizon each evening this week, but it's fading day by day. Monday, March 5 · Mars is at its closest to Earth for this apparition: 100.8 million km (6 ...
... Sun. Look for it above the sunset horizon far below and perhaps a bit right of Venus and Jupiter. Mercury remains at nearly the same place above your horizon each evening this week, but it's fading day by day. Monday, March 5 · Mars is at its closest to Earth for this apparition: 100.8 million km (6 ...
Sample file
... Radiative Zone: The radiative zone extends beyond the Sun's core layer, for about another 55% of the Sun's radius. Energy from the nuclear fusion reactions in the core is carried through the plasma of the radiative zone by the sequential absorption and reemission of photons, or energy packets, by ga ...
... Radiative Zone: The radiative zone extends beyond the Sun's core layer, for about another 55% of the Sun's radius. Energy from the nuclear fusion reactions in the core is carried through the plasma of the radiative zone by the sequential absorption and reemission of photons, or energy packets, by ga ...
Kohoutek Is Coming - Institute of Current World Affairs
... to serve as a proper omen than one that comes around like clockwork every so many years. In fact, we now know that only some comets move in orbits that bring them around the sun periodically. Most of these ...
... to serve as a proper omen than one that comes around like clockwork every so many years. In fact, we now know that only some comets move in orbits that bring them around the sun periodically. Most of these ...
Venus1
... Venus is the second planet from the Sun. With a nearly circular orbit, it an orbits the sun every 225 days. Venus is peculiar in that its axis rotation is retrograde (in the opposite sense of the Earth and all other planets except Uranus) and because it is very slow: a Solar day on Venus corresponds ...
... Venus is the second planet from the Sun. With a nearly circular orbit, it an orbits the sun every 225 days. Venus is peculiar in that its axis rotation is retrograde (in the opposite sense of the Earth and all other planets except Uranus) and because it is very slow: a Solar day on Venus corresponds ...
Solar System Formation
... You will know the topic a week in advance. You will draw a mini-Mars each week. You will answer in order of your mini-Mars value. The value on your mini-Mars determines the number of points you can earn that round: 1-5 earns 3 points, 6-10 earns 4 points, 1115 earns 5 points. You may not re-use or r ...
... You will know the topic a week in advance. You will draw a mini-Mars each week. You will answer in order of your mini-Mars value. The value on your mini-Mars determines the number of points you can earn that round: 1-5 earns 3 points, 6-10 earns 4 points, 1115 earns 5 points. You may not re-use or r ...
environmental ethics gaia ppt
... and the presence of compounds of nutrient elements have been, for immense periods, just those optimal for surface life. Rather . . . energy is expended by the biota to actively maintain these optima. philosophicalinvestigations.co.uk ...
... and the presence of compounds of nutrient elements have been, for immense periods, just those optimal for surface life. Rather . . . energy is expended by the biota to actively maintain these optima. philosophicalinvestigations.co.uk ...
IDENTIFYING THE ROTATION RATE AND THE PRESENCE OF
... on a simulated data series for an Earth without any cloud cover. We assume the i ¼ 90 viewing geometry described in x 2.2 and observations with an S/N of 40 and 0.1 hr temporal resolution. Such assumptions are clearly optimistic but not completely unreasonable. A 8 ; 3.5 m TPF-C mission could make ...
... on a simulated data series for an Earth without any cloud cover. We assume the i ¼ 90 viewing geometry described in x 2.2 and observations with an S/N of 40 and 0.1 hr temporal resolution. Such assumptions are clearly optimistic but not completely unreasonable. A 8 ; 3.5 m TPF-C mission could make ...
Moon, Super-Moon, Planets of the Solar System
... FIG. 2. Half of the Moon is always lit by the Sun as shown in the inner circle. As the Moon orbits the Earth, we see different parts of the lighted area. The revolution of the Moon around the Earth makes the Moon look as if it is changing shape in the sky. This is caused by different angles from whi ...
... FIG. 2. Half of the Moon is always lit by the Sun as shown in the inner circle. As the Moon orbits the Earth, we see different parts of the lighted area. The revolution of the Moon around the Earth makes the Moon look as if it is changing shape in the sky. This is caused by different angles from whi ...
www.astro.org.uk www.facebook.com/Stra ordAstro www.twi er.com
... measurements of cosmological distances. The astronomers worked out the distance to the Large Magellanic Cloud by observing rare close pairs of stars, known as eclipsing binaries . As these stars orbit each other they pass in front of each other. When this happens, as seen from Earth, the total brigh ...
... measurements of cosmological distances. The astronomers worked out the distance to the Large Magellanic Cloud by observing rare close pairs of stars, known as eclipsing binaries . As these stars orbit each other they pass in front of each other. When this happens, as seen from Earth, the total brigh ...
Million years - The Origin Of Life
... Since evolutionists accept that the Big Bang happened 15 billion years ago and the Solar system and planets formed 5 billion years ago, they have a set time scale they can accept. ...
... Since evolutionists accept that the Big Bang happened 15 billion years ago and the Solar system and planets formed 5 billion years ago, they have a set time scale they can accept. ...
Nature of Stars 2
... the star appears to be relative to more distant stars. Then, they wait 6 months; during this time, Earth moves from one side of its orbit around the Sun to the other side. When they observe the star again, parallax will cause the star to appear in a different position relative to more distant stars. ...
... the star appears to be relative to more distant stars. Then, they wait 6 months; during this time, Earth moves from one side of its orbit around the Sun to the other side. When they observe the star again, parallax will cause the star to appear in a different position relative to more distant stars. ...
Asteroids, meteors, meteorites
... of the computer simulation on asteroid impacts, Peiser adds, "If it can happen in front of your nose -- practically in your backyard -- it can also happen on Earth." 1998 -- Astronomers announce that an asteroid may be on a collision course for Earth. The warning is quickly withdrawn after further o ...
... of the computer simulation on asteroid impacts, Peiser adds, "If it can happen in front of your nose -- practically in your backyard -- it can also happen on Earth." 1998 -- Astronomers announce that an asteroid may be on a collision course for Earth. The warning is quickly withdrawn after further o ...
search for extrasolar planets
... • Star-star microlensing is seen if we watch enough stars (millions) • Planets at the right place have a distinct signature, now seen • Existing data precise enough to have shown terrestrial-mass planets ...
... • Star-star microlensing is seen if we watch enough stars (millions) • Planets at the right place have a distinct signature, now seen • Existing data precise enough to have shown terrestrial-mass planets ...
Exoplanet Discoveries and the Fermi Paradox
... and their expected lifetimes. Drake concluded that the number of intelligent species in the galaxy was on the order of one thousand to 100 million, with the nearest being perhaps 80-800 light years away. With Drake’s numbers, it appeared that we should hear from the extraterrestrials rather soon; bu ...
... and their expected lifetimes. Drake concluded that the number of intelligent species in the galaxy was on the order of one thousand to 100 million, with the nearest being perhaps 80-800 light years away. With Drake’s numbers, it appeared that we should hear from the extraterrestrials rather soon; bu ...
Foundations of Harappan Astronomy:
... Parpola (1994; 198:210) has extensively speculated on the possible astronomical and astrological background of Harappan Civilisation. Basin his ideas on his conviction of the connection between Harappan Civilisation. He points out that the Nakshtatras (Lunar mansions) appear fully formulated in the ...
... Parpola (1994; 198:210) has extensively speculated on the possible astronomical and astrological background of Harappan Civilisation. Basin his ideas on his conviction of the connection between Harappan Civilisation. He points out that the Nakshtatras (Lunar mansions) appear fully formulated in the ...
transit of Venus - Glenn Schneider
... apparent diameter at about one arc minute, three times the diameter Gassendi had measured for Mercury. From Manchester, 25 miles southeast of Much Hoole, Horrocks’s friend William Crabtree used a similar telescope to glimpse Venus in transit just before sunset. As far as we know, Horrocks and Crabtr ...
... apparent diameter at about one arc minute, three times the diameter Gassendi had measured for Mercury. From Manchester, 25 miles southeast of Much Hoole, Horrocks’s friend William Crabtree used a similar telescope to glimpse Venus in transit just before sunset. As far as we know, Horrocks and Crabtr ...
Lecture2.2014_v4 - UCO/Lick Observatory
... • A celestial body that (a) is in orbit around the Sun (b) has sufficient mass for its self-gravity to overcome rigid body forces, so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit. ...
... • A celestial body that (a) is in orbit around the Sun (b) has sufficient mass for its self-gravity to overcome rigid body forces, so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit. ...
Polaris – Distance to Pole
... Ptolemy , … accepted a fixed Equant point. ... For Ptolemy set out that he actually did not get below 10 minutes of arc … in making observations. To us, on whom Divine benevolence has bestowed the most diligent of observers, Tycho Brahe, from whose observations this 8-minute error of Ptolemy's in re ...
... Ptolemy , … accepted a fixed Equant point. ... For Ptolemy set out that he actually did not get below 10 minutes of arc … in making observations. To us, on whom Divine benevolence has bestowed the most diligent of observers, Tycho Brahe, from whose observations this 8-minute error of Ptolemy's in re ...
Lecture 2: A Modern View of the Universe
... difference between summer and winter is that the Earth is closer to the Sun in summer. Which of the following is the best fact you can use to convince your friend that his/her explanation must be wrong? Why? a) days are shorter in winter than in summer b) if you are above the Arctic Circle in winter ...
... difference between summer and winter is that the Earth is closer to the Sun in summer. Which of the following is the best fact you can use to convince your friend that his/her explanation must be wrong? Why? a) days are shorter in winter than in summer b) if you are above the Arctic Circle in winter ...
Dynamics of Planetary Systems - Uppsala Astronomical Observatory
... Certainly, this may be a problem of academic interest only, as far as the real Solar System is concerned, and it may be that our planetary orbits remain stable over a time much longer than the age of the Solar System (4.6 · 109 years). However, the problem of the stability of the Solar System has re ...
... Certainly, this may be a problem of academic interest only, as far as the real Solar System is concerned, and it may be that our planetary orbits remain stable over a time much longer than the age of the Solar System (4.6 · 109 years). However, the problem of the stability of the Solar System has re ...
Stars, Galaxies, and the Universe Section 1 Distances to Stars
... • The apparent motion of stars, or motion as it appears from Earth, is caused by the movement of Earth. • The stars seem as though they are moving counterclockwise around a central star called Polaris, the North Star. Polaris is almost directly above the North Pole, and thus the star does not appear ...
... • The apparent motion of stars, or motion as it appears from Earth, is caused by the movement of Earth. • The stars seem as though they are moving counterclockwise around a central star called Polaris, the North Star. Polaris is almost directly above the North Pole, and thus the star does not appear ...
ph709-09
... mass of COROT-7b is about 4.8 Earth masses,[2] so its density is similar to Earth's. It is possible from this to exclude that the planet is made purely of iron, but other compositions, including a predominantly rocky one, are possible. [1] It orbits very close to its star with an orbital period of 2 ...
... mass of COROT-7b is about 4.8 Earth masses,[2] so its density is similar to Earth's. It is possible from this to exclude that the planet is made purely of iron, but other compositions, including a predominantly rocky one, are possible. [1] It orbits very close to its star with an orbital period of 2 ...
Geocentric model

In astronomy, the geocentric model (also known as geocentrism, or the Ptolemaic system) is a description of the cosmos where Earth is at the orbital center of all celestial bodies. This model served as the predominant cosmological system in many ancient civilizations such as ancient Greece including the noteworthy systems of Aristotle (see Aristotelian physics) and Ptolemy. As such, they believed that the Sun, Moon, stars, and naked eye planets circled Earth.Two commonly made observations supported the idea that Earth was the center of the Universe. The stars, the sun, and planets appear to revolve around Earth each day, making Earth the center of that system. The stars were thought to be on a celestial sphere, with the earth at its center, that rotated each day, using a line through the north and south pole as an axis. The stars closest to the equator appeared to rise and fall the greatest distance, but each star circled back to its rising point each day. The second observation supporting the geocentric model was that the Earth does not seem to move from the perspective of an Earth-bound observer, and that it is solid, stable, and unmoving.Ancient Roman and medieval philosophers usually combined the geocentric model with a spherical Earth. It is not the same as the older flat Earth model implied in some mythology, as was the case with the biblical and postbiblical Latin cosmology. The ancient Jewish Babylonian uranography pictured a flat Earth with a dome-shaped rigid canopy named firmament placed over it. (רקיע- rāqîa').However, the ancient Greeks believed that the motions of the planets were circular and not elliptical, a view that was not challenged in Western culture until the 17th century through the synthesis of theories by Copernicus and Kepler.The astronomical predictions of Ptolemy's geocentric model were used to prepare astrological and astronomical charts for over 1500 years. The geocentric model held sway into the early modern age, but from the late 16th century onward was gradually superseded by the heliocentric model of Copernicus, Galileo and Kepler. There was much resistance to the transition between these two theories. Christian theologians were reluctant to reject a theory that agreed with Bible passages (e.g. ""Sun, stand you still upon Gibeon"", Joshua 10:12 – King James 2000 Bible). Others felt a new, unknown theory could not subvert an accepted consensus for geocentrism.