Slide 1
... however, is what causes this change. The seasons are NOT caused by the Earth getting closer and farther from the sun. (If you put this on a test, you will get NEGATIVE points) Rather, the seasons are caused by a 23.5° tilt of the Earth’s rotational axis from vertical. This causes sunlight to hit at ...
... however, is what causes this change. The seasons are NOT caused by the Earth getting closer and farther from the sun. (If you put this on a test, you will get NEGATIVE points) Rather, the seasons are caused by a 23.5° tilt of the Earth’s rotational axis from vertical. This causes sunlight to hit at ...
Transit of Venus
... All these objects are gravitationally bound to the Sun and revolve around it. Planets are very small compared to the space between them. The size of the astronomical objects can vary over a large range… ...
... All these objects are gravitationally bound to the Sun and revolve around it. Planets are very small compared to the space between them. The size of the astronomical objects can vary over a large range… ...
Midterm 1 Short Answer (+1-3pts) Record the answers to these
... to the stars. This view is the correct explanation for retrograde motion. Mars is not really changing direction, it just appears to do so from our point of view. It’s kind of like when you are passing a slower moving car. When you’ve passed it, it looks like it is moving backwards from you. Galileo ...
... to the stars. This view is the correct explanation for retrograde motion. Mars is not really changing direction, it just appears to do so from our point of view. It’s kind of like when you are passing a slower moving car. When you’ve passed it, it looks like it is moving backwards from you. Galileo ...
Astronomy - Wappingers Central School District
... are constantly being made. This often makes the internet a more powerful resource than a well developed textbook. The course is designed to be flexible enough that the students will be able to review and discuss some of these ground breaking topics as they are happening. At the other end of the spec ...
... are constantly being made. This often makes the internet a more powerful resource than a well developed textbook. The course is designed to be flexible enough that the students will be able to review and discuss some of these ground breaking topics as they are happening. At the other end of the spec ...
Actual Earth Motions
... furthei evidence of Earth's revolution. A constellation is a grouP of stars that form a pattem and are used to help people locate celestial obiects. At night you can see different constellations at different times of the year, as shown in Figure tl-9. Earth's revolution around the sun produces other ...
... furthei evidence of Earth's revolution. A constellation is a grouP of stars that form a pattem and are used to help people locate celestial obiects. At night you can see different constellations at different times of the year, as shown in Figure tl-9. Earth's revolution around the sun produces other ...
Our Place in the Universe (Chapter 1) The Structure and Size of the
... Astronomers can measure how far away galaxies are and how fast they are moving All the galaxies in the Universe, including our Milky Way, are spreading apart and moving away from each other. Galaxies that are close together are moving apart slowly, but galaxies that are far apart are moving apart m ...
... Astronomers can measure how far away galaxies are and how fast they are moving All the galaxies in the Universe, including our Milky Way, are spreading apart and moving away from each other. Galaxies that are close together are moving apart slowly, but galaxies that are far apart are moving apart m ...
Our Place in the Cosmos Elective Course Autumn 2006
... Aberration of Starlight • Cannot be detected by human eye but easily detectable with a telescope • Aberration of starlight first detected in 1720s by Samuel Molyneux and James Bradley • They showed that Earth moves on roughly (but not exactly) circular orbit about the Sun with average speed 29.8 k ...
... Aberration of Starlight • Cannot be detected by human eye but easily detectable with a telescope • Aberration of starlight first detected in 1720s by Samuel Molyneux and James Bradley • They showed that Earth moves on roughly (but not exactly) circular orbit about the Sun with average speed 29.8 k ...
Powerpoint
... Astronomers can measure how far away galaxies are and how fast they are moving All the galaxies in the Universe, including our Milky Way, are spreading apart and moving away from each other. Galaxies that are close together are moving apart slowly, but galaxies that are far apart are moving apart m ...
... Astronomers can measure how far away galaxies are and how fast they are moving All the galaxies in the Universe, including our Milky Way, are spreading apart and moving away from each other. Galaxies that are close together are moving apart slowly, but galaxies that are far apart are moving apart m ...
Astronomical co-ordinates
... 1B11 Precession and Nutation • Precession occurs due to the gravitational pull of the Sun and the Moon (mostly the Moon). • Over 26,000 years, the positions of the celestial poles and the equinoxes change with respect to the stars. • Thus it is always necessary to specify a date for equatorial co-o ...
... 1B11 Precession and Nutation • Precession occurs due to the gravitational pull of the Sun and the Moon (mostly the Moon). • Over 26,000 years, the positions of the celestial poles and the equinoxes change with respect to the stars. • Thus it is always necessary to specify a date for equatorial co-o ...
The Sky
... – Number of days in week equals number of “planets” (non-stationary celestial objects) – Seven objects in the sky move relative to the stars: Sun, Moon, Mercury, Venus, Mars, Jupiter, and Saturn. English names for the days of the week are based on these. ...
... – Number of days in week equals number of “planets” (non-stationary celestial objects) – Seven objects in the sky move relative to the stars: Sun, Moon, Mercury, Venus, Mars, Jupiter, and Saturn. English names for the days of the week are based on these. ...
Astronomy 103 Announcements
... Appear close together, may actually be at different distances Now refers to an area of the sky rather than collection of stars Sky is divided into 88 constellations ...
... Appear close together, may actually be at different distances Now refers to an area of the sky rather than collection of stars Sky is divided into 88 constellations ...
UNIVERSAL GRAVITATION
... SYSTEM: From the work of Copernicus and Kepler, the relative sizes of the planetary orbits was known but not their absolute sizes. Example: Rmars/Rearth = 1.52 In 1672 French astronomers triangulated Mars when in opposition, observing it from Paris and Cayenne at the same time. Result: Earth-Sun dis ...
... SYSTEM: From the work of Copernicus and Kepler, the relative sizes of the planetary orbits was known but not their absolute sizes. Example: Rmars/Rearth = 1.52 In 1672 French astronomers triangulated Mars when in opposition, observing it from Paris and Cayenne at the same time. Result: Earth-Sun dis ...
Lab Activity on the Causes of the Seasons
... Introduction: Part of the scientific process is to constantly test models to see if they can account for all observations. If they do not, we modify them. During this activity, you will be testing your model and modifying it (or starting over) as necessary in order to account for all the observation ...
... Introduction: Part of the scientific process is to constantly test models to see if they can account for all observations. If they do not, we modify them. During this activity, you will be testing your model and modifying it (or starting over) as necessary in order to account for all the observation ...
mean solar day
... – Because the Earth’s orbit is not a perfect circle • Earth moves faster when it is near the Sun, making the day longer • Mean Sun is the imaginary sun that travels at a uniform rate (the average of the apparent days over one year) along the celestial equator – Mean Sun produces a uniform mean solar ...
... – Because the Earth’s orbit is not a perfect circle • Earth moves faster when it is near the Sun, making the day longer • Mean Sun is the imaginary sun that travels at a uniform rate (the average of the apparent days over one year) along the celestial equator – Mean Sun produces a uniform mean solar ...
ppt-file 2.4 MB
... host life. Simple assumptions about the likely distribution of planets in the Milky Way suggest that many water worlds exist in our Galaxy, but elude existing methods of detection. "There could be as many as one billion stellar systems with potentially habitable zones," says Siegfried Franck, a geop ...
... host life. Simple assumptions about the likely distribution of planets in the Milky Way suggest that many water worlds exist in our Galaxy, but elude existing methods of detection. "There could be as many as one billion stellar systems with potentially habitable zones," says Siegfried Franck, a geop ...
Climbing the Cosmic Distance Ladder: How Astronomers Measure
... 1] Stars do not come in only three types. 2] We cannot resolve their discs. Even the closest stars are too far away. 3] Stars evolve in time, so their brightness and color change. ...
... 1] Stars do not come in only three types. 2] We cannot resolve their discs. Even the closest stars are too far away. 3] Stars evolve in time, so their brightness and color change. ...
Life in the Universe - University of Georgia
... K-B objects = millions of microbes + small insects scattered around northern Georgia ...
... K-B objects = millions of microbes + small insects scattered around northern Georgia ...
Document
... heliocentric cosmogonies. Understand the Ptolemaic system and how the Copernican heliocentric system better explains our observations of the Moon and planets. 2. Know how Tycho Brahe revolutionized the practice of astronomy. Know Kepler's three laws and be able to explain them. Understand how Galile ...
... heliocentric cosmogonies. Understand the Ptolemaic system and how the Copernican heliocentric system better explains our observations of the Moon and planets. 2. Know how Tycho Brahe revolutionized the practice of astronomy. Know Kepler's three laws and be able to explain them. Understand how Galile ...
Unit 3, Prelab Unit 3
... way is to use the semi-major axis and the eccentricity, ε. For planetary motion, the semimajor axis is the time average distance of a planet from the Sun. The eccentricity is a number between 0 and 1 that describes the flatness of the ellipse. A circle has an eccentricity of 0. As the eccentricity in ...
... way is to use the semi-major axis and the eccentricity, ε. For planetary motion, the semimajor axis is the time average distance of a planet from the Sun. The eccentricity is a number between 0 and 1 that describes the flatness of the ellipse. A circle has an eccentricity of 0. As the eccentricity in ...
Geology 110: Earth and Space Science
... Checkpoint 2.16, p. 47 (NOT REQUIRED…all classes) #20. In 2006, the IAU defined a new class of planets, dwarf planets. Explain why this is consistent with nature of science described in Chapter 1. Checkpoint 2.17, p. 49 #21: How do we define the length of a year on Earth? a) A year is related to the ...
... Checkpoint 2.16, p. 47 (NOT REQUIRED…all classes) #20. In 2006, the IAU defined a new class of planets, dwarf planets. Explain why this is consistent with nature of science described in Chapter 1. Checkpoint 2.17, p. 49 #21: How do we define the length of a year on Earth? a) A year is related to the ...
Lesson 1 – Explain – Page 375 “The Structure of
... Millions of small, rocky objects called asteroids orbit the Sun in the asteroid belt between the orbits of Mars and Jupiter. Asteroids range in size from less than a meter to several hundred kilometers in length. Unlike planets and dwarf planets, asteroids usually are not spherical. Comets A ...
... Millions of small, rocky objects called asteroids orbit the Sun in the asteroid belt between the orbits of Mars and Jupiter. Asteroids range in size from less than a meter to several hundred kilometers in length. Unlike planets and dwarf planets, asteroids usually are not spherical. Comets A ...
time astro 2014 - Fort Thomas Independent Schools
... night, the Earth points towards a different part of the universe, giving us a slightly different view of the stars. 1st night: you see a constellation at a specific coordinate at a specific time 2nd night: you see the constellation at the same coordinate, but in order to see this, you must view ...
... night, the Earth points towards a different part of the universe, giving us a slightly different view of the stars. 1st night: you see a constellation at a specific coordinate at a specific time 2nd night: you see the constellation at the same coordinate, but in order to see this, you must view ...
Stellar Parallax
... the Zenith and we also refer to the Meridian, a great circle through the Observer’s zenith and intersecting the horizon N. & S. • The Earth’s equator projected on to the celestial sphere establishes the celestial equator thus dividing it into N and S hemispheres. Projecting the Earth’s N and S poles ...
... the Zenith and we also refer to the Meridian, a great circle through the Observer’s zenith and intersecting the horizon N. & S. • The Earth’s equator projected on to the celestial sphere establishes the celestial equator thus dividing it into N and S hemispheres. Projecting the Earth’s N and S poles ...
THe SCieNCe OF ASTrONOMY
... Solar and Lunar Calendars The tracking of the seasons eventually led to the advent of written calendars. Today, we use a solar calendar, meaning a calendar that is synchronized with the seasons so that seasonal events such as the solstices and equinoxes occur on approximately the same dates each yea ...
... Solar and Lunar Calendars The tracking of the seasons eventually led to the advent of written calendars. Today, we use a solar calendar, meaning a calendar that is synchronized with the seasons so that seasonal events such as the solstices and equinoxes occur on approximately the same dates each yea ...
Copernican heliocentrism
Copernican heliocentrism is the name given to the astronomical model developed by Nicolaus Copernicus and published in 1543. It positioned the Sun near the center of the Universe, motionless, with Earth and the other planets rotating around it in circular paths modified by epicycles and at uniform speeds. The Copernican model departed from the Ptolemaic system that prevailed in Western culture for centuries, placing Earth at the center of the Universe, and is often regarded as the launching point to modern astronomy and the Scientific Revolution.Copernicus was aware that the ancient Greek Aristarchus had already proposed a heliocentric theory, and cited him as a proponent of it in a reference that was deleted before publication, but there is no evidence that Copernicus had knowledge of, or access to, the specific details of Aristarchus' theory. Although he had circulated an outline of his own heliocentric theory to colleagues sometime before 1514, he did not decide to publish it until he was urged to do so late in his life by his pupil Rheticus. Copernicus's challenge was to present a practical alternative to the Ptolemaic model by more elegantly and accurately determining the length of a solar year while preserving the metaphysical implications of a mathematically ordered cosmos. Thus his heliocentric model retained several of the Ptolemaic elements causing the inaccuracies, such as the planets' circular orbits, epicycles, and uniform speeds, while at the same time re-introducing such innovations as,Earth is one of several planets revolving around a stationary Sun in a determined orderEarth has three motions: daily rotation, annual revolution, and annual tilting of its axisRetrograde motion of the planets is explained by Earth's motionDistance from Earth to the Sun is small compared to the distance to the stars.↑ 1.0 1.1 ↑