GEOCENTRIC AND HELIOCENTRIC MODELS
... Back to Calculations… As we touched on previously, astronomers have developed convenient units of measure to accommodate and reduce large distances to manageable numbers. Interstellar (distances between the stars) are measured using the light-year (l.y.). Since light travels about 9.5 trillion km pe ...
... Back to Calculations… As we touched on previously, astronomers have developed convenient units of measure to accommodate and reduce large distances to manageable numbers. Interstellar (distances between the stars) are measured using the light-year (l.y.). Since light travels about 9.5 trillion km pe ...
Ancient Astronomy
... Since Mercury and Venus are always observed near the sun they must be closer to the sun. The other planets, which could be seen at midnight, must be further away from the sun then the Earth. ...
... Since Mercury and Venus are always observed near the sun they must be closer to the sun. The other planets, which could be seen at midnight, must be further away from the sun then the Earth. ...
Dark Skies Above Downeast Maine
... December 1 -‐ Saturn, Venus, and Mercury will be visible in the morning sky for a little while. Watch ...
... December 1 -‐ Saturn, Venus, and Mercury will be visible in the morning sky for a little while. Watch ...
Grand Tour Worksheet - School District of La Crosse
... 11. How is the hierarchical structure continued down to the smallest scales? ...
... 11. How is the hierarchical structure continued down to the smallest scales? ...
Decline of Western Civilization (extended) knowledge of ancient
... Sidereal period determined from apparent period and earth’s period Superior Planets Planet’s orbit about Sun is outside Earth’s orbit about sun ...
... Sidereal period determined from apparent period and earth’s period Superior Planets Planet’s orbit about Sun is outside Earth’s orbit about sun ...
Constellations Reading
... may have had ceremonial or religious significance. In other cases, the star groupings helped to mark the passage of time between planting and harvesting. There are 48 “ancient” constellations and they are the brightest groupings of stars – those observed easily by the unaided eye. There are actually ...
... may have had ceremonial or religious significance. In other cases, the star groupings helped to mark the passage of time between planting and harvesting. There are 48 “ancient” constellations and they are the brightest groupings of stars – those observed easily by the unaided eye. There are actually ...
solution
... 3.24 How did Aristarchus try to estimate the diameters of the Sun and Moon? He used geometry and proportions to estimate the relative distances between the Sun, Earth and Moon. Once he had these, he used the eclipses to state that the Sun and Moon had the same angular size, so their relative sizes c ...
... 3.24 How did Aristarchus try to estimate the diameters of the Sun and Moon? He used geometry and proportions to estimate the relative distances between the Sun, Earth and Moon. Once he had these, he used the eclipses to state that the Sun and Moon had the same angular size, so their relative sizes c ...
Interactive Tutorial Activities in ASTR 310
... B) a is younger than b: its planet formed more recently A) b has a larger diameter, takes longer than a to orbit discovered using one of three methods: measuring Doppler shifts B) b has a smaller diameter, takes the same amount of of the star, observing dips in the lightcurve of the star or seeing C ...
... B) a is younger than b: its planet formed more recently A) b has a larger diameter, takes longer than a to orbit discovered using one of three methods: measuring Doppler shifts B) b has a smaller diameter, takes the same amount of of the star, observing dips in the lightcurve of the star or seeing C ...
Back to basics: naked-eye astronomical observation
... us. All this without the colour and glamour of the big images and without star maps and software. Somehow it feels less like work, observing in the cold night air. The greatest problem is, of course, the weather. Here I have to admit that, as a wet weather fall-back, computers come into their own. B ...
... us. All this without the colour and glamour of the big images and without star maps and software. Somehow it feels less like work, observing in the cold night air. The greatest problem is, of course, the weather. Here I have to admit that, as a wet weather fall-back, computers come into their own. B ...
Seasons and Currents Quiz-
... 24. What are the TWO reasons we have seasons? 1. The Earth’s TILT 2. The Revolution of Earth around the Sun 25. What does an analemma show? Draw one, and label 3 parts of it. An analemma traces the path of the Sun over 365 days. It looks like a figure “8”, top is the summer solstice (June 21), middl ...
... 24. What are the TWO reasons we have seasons? 1. The Earth’s TILT 2. The Revolution of Earth around the Sun 25. What does an analemma show? Draw one, and label 3 parts of it. An analemma traces the path of the Sun over 365 days. It looks like a figure “8”, top is the summer solstice (June 21), middl ...
SkyMatters Jan-2017 - CIT Blackrock Castle Observatory
... Mercury is a morning planet this month, farthest to the west of the Sun on 19th. It is a challenging object as always and requires a small telescope or binoculars. Venus is an evening planet and is farthest from the Sun on 12th. It will be very bright and easy to spot. A small telescope will reveal ...
... Mercury is a morning planet this month, farthest to the west of the Sun on 19th. It is a challenging object as always and requires a small telescope or binoculars. Venus is an evening planet and is farthest from the Sun on 12th. It will be very bright and easy to spot. A small telescope will reveal ...
Apparent Motions of Celestial Objects
... In the Northern Hemisphere: The Sun rises north of east and sets north of west in the summer. The sun’s altitude at noon is highest during the year. The sun’s “apparent path” across the sky is at its longest (greater than 12 hours). ...
... In the Northern Hemisphere: The Sun rises north of east and sets north of west in the summer. The sun’s altitude at noon is highest during the year. The sun’s “apparent path” across the sky is at its longest (greater than 12 hours). ...
Chapter 2 Discovering the Universe for Yourself
... hits it more directly; winter occurs when the sunlight is less direct. • AXIS TILT is the key to the seasons; without it, we would not have seasons on Earth. ...
... hits it more directly; winter occurs when the sunlight is less direct. • AXIS TILT is the key to the seasons; without it, we would not have seasons on Earth. ...
Friday Feb 25th, 2000
... Number of galaxy groups in the visible universe = 500 million Number of large galaxies in the visible universe = 10 billion Number of dwarf galaxies in the visible universe = 100 billion Number of stars in the visible universe = 2000 billion billion ...
... Number of galaxy groups in the visible universe = 500 million Number of large galaxies in the visible universe = 10 billion Number of dwarf galaxies in the visible universe = 100 billion Number of stars in the visible universe = 2000 billion billion ...
december 2010 - Holt Planetarium
... On December 21 there is a total eclipse of the Moon. The total phase of this eclipse lasts for just over 72 minutes, with the partial umbral eclipse spanning almost 3.5 hours. All stages of the total eclipse of the Moon are visible from North America and the eastern Pacific. South America will see t ...
... On December 21 there is a total eclipse of the Moon. The total phase of this eclipse lasts for just over 72 minutes, with the partial umbral eclipse spanning almost 3.5 hours. All stages of the total eclipse of the Moon are visible from North America and the eastern Pacific. South America will see t ...
december 2010 - Holt Planetarium
... On December 21 there is a total eclipse of the Moon. The total phase of this eclipse lasts for just over 72 minutes, with the partial umbral eclipse spanning almost 3.5 hours. All stages of the total eclipse of the Moon are visible from North America and the eastern Pacific. South America will see t ...
... On December 21 there is a total eclipse of the Moon. The total phase of this eclipse lasts for just over 72 minutes, with the partial umbral eclipse spanning almost 3.5 hours. All stages of the total eclipse of the Moon are visible from North America and the eastern Pacific. South America will see t ...
Friday, August 28 - Otterbein University
... • Their positions are related because – the direction of Polaris defines the rotation axis of the celestial sphere – The sun is somewhere on the sphere – From a “skewed” perspective everything on the sphere culminates on the meridian ...
... • Their positions are related because – the direction of Polaris defines the rotation axis of the celestial sphere – The sun is somewhere on the sphere – From a “skewed” perspective everything on the sphere culminates on the meridian ...
Sun - Blackboard
... through space and time. That quick preview only sets the stage for the drama to come. Now it is time to return to Earth and look closely at the sky and answer four essential questions: • How do astronomers refer to stars and compare their brightness? • How does the sky appear to move as Earth rotate ...
... through space and time. That quick preview only sets the stage for the drama to come. Now it is time to return to Earth and look closely at the sky and answer four essential questions: • How do astronomers refer to stars and compare their brightness? • How does the sky appear to move as Earth rotate ...
Power Point Version
... • The moon, or satellites, or the space shuttle are in orbit around the Earth. • There is no weight to objects in orbit of other objects because they are falling around the body they are circling. • There IS gravity, it is constantly pulling the object downward, but the satellite is traveling sidewa ...
... • The moon, or satellites, or the space shuttle are in orbit around the Earth. • There is no weight to objects in orbit of other objects because they are falling around the body they are circling. • There IS gravity, it is constantly pulling the object downward, but the satellite is traveling sidewa ...
PowerPoint Presentation - Planetary Configurations
... • Superior Planets – Mars, Jupiter, Saturn, Uranus, Neptune, Pluto ...
... • Superior Planets – Mars, Jupiter, Saturn, Uranus, Neptune, Pluto ...
Introduction to Sun Motion
... Hence drawings for dials are very different from one another, corresponding to differences of situation. This is because the length of the shadow at the equinox is used in constructing the figure of the analemma, in accordance with which the hours are marked to conform to the shadow of the gnomon. T ...
... Hence drawings for dials are very different from one another, corresponding to differences of situation. This is because the length of the shadow at the equinox is used in constructing the figure of the analemma, in accordance with which the hours are marked to conform to the shadow of the gnomon. T ...
Planning Map
... (A) know the definition of science and understand that it has limitations, as specified in subsection (b)(2) of this section; (B) know that scientific hypotheses are tentative and testable statements that must be capable of being supported or not supported by observational evidence. Hypotheses of d ...
... (A) know the definition of science and understand that it has limitations, as specified in subsection (b)(2) of this section; (B) know that scientific hypotheses are tentative and testable statements that must be capable of being supported or not supported by observational evidence. Hypotheses of d ...
The Science of Astronomy - Ohio Wesleyan University
... – Observations and measurements are made of objects and phenomena – Theoretical models are constructed in order to explain the observations – Comparisons are made between the theoretical models and the observations – Modifications are made to the theoretical models in order to better explain the obs ...
... – Observations and measurements are made of objects and phenomena – Theoretical models are constructed in order to explain the observations – Comparisons are made between the theoretical models and the observations – Modifications are made to the theoretical models in order to better explain the obs ...
Archaeoastronomy
Archaeoastronomy (also spelled archeoastronomy) is the study of how people in the past ""have understood the phenomena in the sky, how they used these phenomena and what role the sky played in their cultures."" Clive Ruggles argues it is misleading to consider archaeoastronomy to be the study of ancient astronomy, as modern astronomy is a scientific discipline, while archaeoastronomy considers symbolically rich cultural interpretations of phenomena in the sky by other cultures. It is often twinned with ethnoastronomy, the anthropological study of skywatching in contemporary societies. Archaeoastronomy is also closely associated with historical astronomy, the use of historical records of heavenly events to answer astronomical problems and the history of astronomy, which uses written records to evaluate past astronomical practice.Archaeoastronomy uses a variety of methods to uncover evidence of past practices including archaeology, anthropology, astronomy, statistics and probability, and history. Because these methods are diverse and use data from such different sources, integrating them into a coherent argument has been a long-term difficulty for archaeoastronomers. Archaeoastronomy fills complementary niches in landscape archaeology and cognitive archaeology. Material evidence and its connection to the sky can reveal how a wider landscape can be integrated into beliefs about the cycles of nature, such as Mayan astronomy and its relationship with agriculture. Other examples which have brought together ideas of cognition and landscape include studies of the cosmic order embedded in the roads of settlements.Archaeoastronomy can be applied to all cultures and all time periods. The meanings of the sky vary from culture to culture; nevertheless there are scientific methods which can be applied across cultures when examining ancient beliefs. It is perhaps the need to balance the social and scientific aspects of archaeoastronomy which led Clive Ruggles to describe it as: ""...[A] field with academic work of high quality at one end but uncontrolled speculation bordering on lunacy at the other.""