Motion of Objects in Space
... 7. How would the force of gravity between Earth and the sun be affected if the mass of Earth were greater than it is? a) The force of gravity would be greater b) The force of gravity would be unchanged c) The force of gravity would be less d) There would be no force of gravity ...
... 7. How would the force of gravity between Earth and the sun be affected if the mass of Earth were greater than it is? a) The force of gravity would be greater b) The force of gravity would be unchanged c) The force of gravity would be less d) There would be no force of gravity ...
Astronomy Lecture 1a
... ___ 19. ? invented terrestrial latitude and longitude and was the first to orient maps with north at the top and east to the right. A.Ptolemy B.Copernicus C.Brahe D.Hipparchus E.Eratosthenes ___ 20. ? is a physical quantity that gives the speed of a body and the direction in which it is moving. A.ma ...
... ___ 19. ? invented terrestrial latitude and longitude and was the first to orient maps with north at the top and east to the right. A.Ptolemy B.Copernicus C.Brahe D.Hipparchus E.Eratosthenes ___ 20. ? is a physical quantity that gives the speed of a body and the direction in which it is moving. A.ma ...
3 Exam #1
... 30. Describe a simple observation which demonstrates why shadows of Earth cannot cause the phases of the Moon. In general terms, what does cause the phases of the Moon? 31. Explain why the position of the stars in the early evening sky changes with the seasons 32. Describe the apparent motion of the ...
... 30. Describe a simple observation which demonstrates why shadows of Earth cannot cause the phases of the Moon. In general terms, what does cause the phases of the Moon? 31. Explain why the position of the stars in the early evening sky changes with the seasons 32. Describe the apparent motion of the ...
Harmony of the Worlds
... modern values of planet/earth orbit ratios. System worked very well. • Contrary to popular myths, Ptolemy's system was not overly cumbersome, and it accounted for subtleties like the uneven motion of the Sun • It is not Ptolemy's fault he did such a good job that it took 1500 years to improve on him ...
... modern values of planet/earth orbit ratios. System worked very well. • Contrary to popular myths, Ptolemy's system was not overly cumbersome, and it accounted for subtleties like the uneven motion of the Sun • It is not Ptolemy's fault he did such a good job that it took 1500 years to improve on him ...
Comets, Asteroids, and Meteors
... Mars and Jupiter. They named these objects Ceres, Pallas, Juno, and Vesta. Over the next 80 years, astronomers found over 300 more. These rocky objects, called asteroids, are too small and too numerous to be considered planets. Most asteroids revolve around the sun between the orbits of Mars and Jup ...
... Mars and Jupiter. They named these objects Ceres, Pallas, Juno, and Vesta. Over the next 80 years, astronomers found over 300 more. These rocky objects, called asteroids, are too small and too numerous to be considered planets. Most asteroids revolve around the sun between the orbits of Mars and Jup ...
Changes in a scientific concept: what is a planet? - Philsci
... 1802 the German physician and astronomer Heinrich Wilhelm Matthäus Olbers discovered another object, Pallas, at 2.8 AU from the Sun. In 1804 the German astronomer Karl Ludwig Harding discovered a third object, Juno, at 2.7 AU. In 1807 Olbers discovered a fourth object, Vesta, at 2.4 AU. Olbers propo ...
... 1802 the German physician and astronomer Heinrich Wilhelm Matthäus Olbers discovered another object, Pallas, at 2.8 AU from the Sun. In 1804 the German astronomer Karl Ludwig Harding discovered a third object, Juno, at 2.7 AU. In 1807 Olbers discovered a fourth object, Vesta, at 2.4 AU. Olbers propo ...
S LAR SYSTEM - Fleet Science Center
... The force of gravity causes the dropped objects to fall to the ground. In a vacuum or on the Moon, the objects would land at the same time regardless of their shape, size, or mass. Because of the atmosphere here on Earth however, air resistance can make some objects fall slower than expected. For in ...
... The force of gravity causes the dropped objects to fall to the ground. In a vacuum or on the Moon, the objects would land at the same time regardless of their shape, size, or mass. Because of the atmosphere here on Earth however, air resistance can make some objects fall slower than expected. For in ...
Astronomy and Space Science
... • Aristotle’s (384-322 BCE) model placed the superior planets in right order using their speed on the celestial sphere. • It explains simple phenomena such as daily rise and set of celestial objects, but not the details in longer time scales. • In this model, the Earth is at the center the universe, ...
... • Aristotle’s (384-322 BCE) model placed the superior planets in right order using their speed on the celestial sphere. • It explains simple phenomena such as daily rise and set of celestial objects, but not the details in longer time scales. • In this model, the Earth is at the center the universe, ...
Alien_Skies_CHAPTER5
... Kronos into swallowing a stone instead. In due course, Zeus grew up to lead a revolt of the gods against his father. As for Uranus, he was Kronos’s father and the god of the sky itself. So the story goes that Uranus and Gaia were the parents of Kronos (and many others), who in turn fathered Zeus (am ...
... Kronos into swallowing a stone instead. In due course, Zeus grew up to lead a revolt of the gods against his father. As for Uranus, he was Kronos’s father and the god of the sky itself. So the story goes that Uranus and Gaia were the parents of Kronos (and many others), who in turn fathered Zeus (am ...
The Sun - MsLeeClass
... Perception also impacts how we view the moon and sun. In the sky, the moon and sun appear to be the same size but ACTUALLY the moon is much smaller. The moon is much closer to the Earth than the sun and therefore it SEEMS that the moon and sun are about the same size. We perceive the moon and sun to ...
... Perception also impacts how we view the moon and sun. In the sky, the moon and sun appear to be the same size but ACTUALLY the moon is much smaller. The moon is much closer to the Earth than the sun and therefore it SEEMS that the moon and sun are about the same size. We perceive the moon and sun to ...
Astronomy text. - People Server at UNCW
... result, the dust and gas from the inner Solar System was blown away much more quickly than it was from the outer Solar System. This gave the planets of the inner Solar System less time to grow. Another important difference is that the outer planets are largely made of gas and water, while the inner ...
... result, the dust and gas from the inner Solar System was blown away much more quickly than it was from the outer Solar System. This gave the planets of the inner Solar System less time to grow. Another important difference is that the outer planets are largely made of gas and water, while the inner ...
Our Fun Sun - Environmental Science Institute
... than Earth, but still has a much smaller gravitational force factor relative to Earth. Uranus has less mass since it is a gas planet. This is also true for Jupiter, Saturn, and Neptune since they too are gaseous bodies, but they do have a smaller gravitational force factor compared to the Earth. Act ...
... than Earth, but still has a much smaller gravitational force factor relative to Earth. Uranus has less mass since it is a gas planet. This is also true for Jupiter, Saturn, and Neptune since they too are gaseous bodies, but they do have a smaller gravitational force factor compared to the Earth. Act ...
Solar Nebula:
... e) List at least 3 differences between Pluto and the other solar planets. What feature did astronomers agree upon as a way to differentiate a ‘planet’ from a ‘dwarf planet’? ...
... e) List at least 3 differences between Pluto and the other solar planets. What feature did astronomers agree upon as a way to differentiate a ‘planet’ from a ‘dwarf planet’? ...
Practice test - astronomy
... A. We are closer to the sun. B. The air becomes thicker and more dense. C. The sun’s rays are more direct and days are longer. D. The ratio of the hours of daylight to the hours of night is reduced. ...
... A. We are closer to the sun. B. The air becomes thicker and more dense. C. The sun’s rays are more direct and days are longer. D. The ratio of the hours of daylight to the hours of night is reduced. ...
`Daniel` – The Colonization of Tiamat
... limit of stars has concluded: these “galaxies far, far away” are actually “solar systems close, close nearby.” And for those of us that remain “uncommitted investigators” and are able to actually consider this radically new concept—and the estimated 100 billion “galaxies,” a.k.a. “solar systems” wit ...
... limit of stars has concluded: these “galaxies far, far away” are actually “solar systems close, close nearby.” And for those of us that remain “uncommitted investigators” and are able to actually consider this radically new concept—and the estimated 100 billion “galaxies,” a.k.a. “solar systems” wit ...
Comets - Earth & Planetary Sciences
... • As comet approaches the Sun, it is warmed by solar radiation and vapors are released, often carrying grains of dust with them. • The comet dimensions increase and it appears to brighten, develops a tail, and the tail grows longer. – Comets are seldom seen beyond 3 or 4 AU. The record is 11.5 AU. • ...
... • As comet approaches the Sun, it is warmed by solar radiation and vapors are released, often carrying grains of dust with them. • The comet dimensions increase and it appears to brighten, develops a tail, and the tail grows longer. – Comets are seldom seen beyond 3 or 4 AU. The record is 11.5 AU. • ...
Required Project #1 Questions from “Guide to Using Starry Night Pro
... 24. The Sun appears to a. move along a constant declination angle b. move around a circular path, with slight up and down motion between a little over 20 degrees North to a little over 20 degrees South c. remain fixed among the stars d. move randomly among the stars e. remain approximately fixed on ...
... 24. The Sun appears to a. move along a constant declination angle b. move around a circular path, with slight up and down motion between a little over 20 degrees North to a little over 20 degrees South c. remain fixed among the stars d. move randomly among the stars e. remain approximately fixed on ...
The Great Archaean Bombardment (and the Late Heavy
... The LHB was an intense cratering of the terrestrial planets and the Moon that occurred between 3.8 and 4.1 Gyr ago. The most likely trigger for the onset of the LHB was a dynamical instability in the outer solar system which made the giant planets scatter each other. The eccentric giant planets and ...
... The LHB was an intense cratering of the terrestrial planets and the Moon that occurred between 3.8 and 4.1 Gyr ago. The most likely trigger for the onset of the LHB was a dynamical instability in the outer solar system which made the giant planets scatter each other. The eccentric giant planets and ...
Educator`s Guide for Oasis in Space
... Jupiter, Saturn, and Mercury. However, Mercury is small and difficult to see, so you may want to concentrate on the other four planets. You can tell the difference between stars and planets because stars twinkle while planets do not. The light from stars travels over a much greater distance than the ...
... Jupiter, Saturn, and Mercury. However, Mercury is small and difficult to see, so you may want to concentrate on the other four planets. You can tell the difference between stars and planets because stars twinkle while planets do not. The light from stars travels over a much greater distance than the ...
solar system-where are we? - Iowa State University Extension and
... Balls or drawings labeled “Sun, Moon, Venus, Mercury, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto What you do: Give each child a planet or sun or moon. (This works great if you only have 11 children! If you have fewer children you can place the extra planets on the floor-more children-j ...
... Balls or drawings labeled “Sun, Moon, Venus, Mercury, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto What you do: Give each child a planet or sun or moon. (This works great if you only have 11 children! If you have fewer children you can place the extra planets on the floor-more children-j ...
Aug 2015 supplement - Hermanus Astronomy
... more brilliant sources - both stars and quasars powered by huge black holes started to shine, they cleared away the mist and made the universe transparent to ultraviolet light. Astronomers call this the epoch of reionisation, but little is known about these first galaxies, and up to now they have ju ...
... more brilliant sources - both stars and quasars powered by huge black holes started to shine, they cleared away the mist and made the universe transparent to ultraviolet light. Astronomers call this the epoch of reionisation, but little is known about these first galaxies, and up to now they have ju ...
How the Solar System Formed: The Nebular
... Collapsing Clouds of Gas and Dust A great cloud of gas and dust (called a nebula) begins to collapse. For billions of years it had be stable and drifted in space but something disturbed its equilibrium (perhaps a passing star or a blast wave of energy from a supernova explosion). The equilibrium cam ...
... Collapsing Clouds of Gas and Dust A great cloud of gas and dust (called a nebula) begins to collapse. For billions of years it had be stable and drifted in space but something disturbed its equilibrium (perhaps a passing star or a blast wave of energy from a supernova explosion). The equilibrium cam ...
Here - ScienceA2Z.com
... A planet is any body in orbit around the Sun that has enough mass to form itself into a spherical shape and has cleared its immediate neighbourhood of all smaller objects. By this definition, the Solar System has eight known planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. ...
... A planet is any body in orbit around the Sun that has enough mass to form itself into a spherical shape and has cleared its immediate neighbourhood of all smaller objects. By this definition, the Solar System has eight known planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. ...
The Planets
... be roughly spherical in shape but not massive enough to undergo thermonuclear fusion in their cores like a star. ...
... be roughly spherical in shape but not massive enough to undergo thermonuclear fusion in their cores like a star. ...
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.