quiz 1 Spring 1995
... the same? The earliest sunset is on December 8th. The shortest day is December 21st. They are not the same because of the analemma … the true sun is ahead of the mean sun in December so actual solar events (eg. solar midnight) are ahead of mean solar events (clock midnight). e)18 List the events tha ...
... the same? The earliest sunset is on December 8th. The shortest day is December 21st. They are not the same because of the analemma … the true sun is ahead of the mean sun in December so actual solar events (eg. solar midnight) are ahead of mean solar events (clock midnight). e)18 List the events tha ...
CH 26 PPT
... Brahe tracked and measured the movements of the moon, planets, and other celestial objects. These were the most precise measurements taken before the invention of the telescope. ...
... Brahe tracked and measured the movements of the moon, planets, and other celestial objects. These were the most precise measurements taken before the invention of the telescope. ...
Composition of the Sun
... The sun’s energy comes from fusion, and the mass that is lost during fusion becomes energy. In 1905, Albert Einstein proposed that a small amount of matter yields a large amount of energy. This proposal was part of Einstein’s special theory of ...
... The sun’s energy comes from fusion, and the mass that is lost during fusion becomes energy. In 1905, Albert Einstein proposed that a small amount of matter yields a large amount of energy. This proposal was part of Einstein’s special theory of ...
Solutions
... The disk of the Milky Way galaxy is about 100,000 light-years, or 0.1 million light-years, across. It is about 2.6 million light-years away from the Andromeda galaxy. If we model the disk of each galaxy as a dinner plate (call it 1 foot in diameter for simplicity), then the two dinner plates should ...
... The disk of the Milky Way galaxy is about 100,000 light-years, or 0.1 million light-years, across. It is about 2.6 million light-years away from the Andromeda galaxy. If we model the disk of each galaxy as a dinner plate (call it 1 foot in diameter for simplicity), then the two dinner plates should ...
24 hour division of the day - Indiana University Astronomy
... Earth does not orbit Sun; it is the center of the universe Unfortunately, with notable exceptions like Aristarchus, the Greeks did not think the stars could be that far away, and therefore rejected the correct explanation (1)… Thus setting the stage for the long, historical showdown between Earth-ce ...
... Earth does not orbit Sun; it is the center of the universe Unfortunately, with notable exceptions like Aristarchus, the Greeks did not think the stars could be that far away, and therefore rejected the correct explanation (1)… Thus setting the stage for the long, historical showdown between Earth-ce ...
I can recognize that the moon`s phases are regular and predictable
... “ I can describe the location and movement of individual stars and groups of stars (constellations) as they move through the night sky” ...
... “ I can describe the location and movement of individual stars and groups of stars (constellations) as they move through the night sky” ...
Day 1 - Ch 1
... Apparent rotation of the celestial sphere is due to the rotation of the Earth. The Earth is rotating around an axis that goes from pole to pole through a center. Eventually, each day, the Sun sets in the west. If we suppose the Sun is the center of the solar system, it is fixed, so: Each point on t ...
... Apparent rotation of the celestial sphere is due to the rotation of the Earth. The Earth is rotating around an axis that goes from pole to pole through a center. Eventually, each day, the Sun sets in the west. If we suppose the Sun is the center of the solar system, it is fixed, so: Each point on t ...
The Sky and its Motions
... Venus appears at most ~ 460 from the sun. It can occasionally be seen for at most a few hours after sunset in the west or before sunrise in the east. ...
... Venus appears at most ~ 460 from the sun. It can occasionally be seen for at most a few hours after sunset in the west or before sunrise in the east. ...
Kaler`s MEASURING THE SKY
... along the celestial equator, analogous to longitude) is called the hour angle, which is usually given in time units at a rate of 15° per hour. Apparent solar time is given by the hour angle of the Sun plus 12 hours (the 12 hours added so that the "day" starts at midnight). Because of the eccentrici ...
... along the celestial equator, analogous to longitude) is called the hour angle, which is usually given in time units at a rate of 15° per hour. Apparent solar time is given by the hour angle of the Sun plus 12 hours (the 12 hours added so that the "day" starts at midnight). Because of the eccentrici ...
Integrative Studies 410 Our Place in the Universe
... The Sun – A typical Star • The only star in the solar system • Diameter: 100 that of Earth • Mass: 300,000 that of Earth • Density: 0.3 that of Earth (comparable to the Jovians) • Rotation period = 24.9 days (equator), 29.8 days (poles) • Temperature of visible surface = 5800 K (about 10,000º ...
... The Sun – A typical Star • The only star in the solar system • Diameter: 100 that of Earth • Mass: 300,000 that of Earth • Density: 0.3 that of Earth (comparable to the Jovians) • Rotation period = 24.9 days (equator), 29.8 days (poles) • Temperature of visible surface = 5800 K (about 10,000º ...
Lecture04
... Earth’s rotation • Responsible for our familiar calendar “day”. • Period (of rotation) = 24 hours = (24 hours)x(60 min/hr)x(60s/min) =86,400 s • Astronomers refer to this 24 hour period as a mean solar day (§2-7), implying that this time period is measured with respect to the Sun’s position on the ...
... Earth’s rotation • Responsible for our familiar calendar “day”. • Period (of rotation) = 24 hours = (24 hours)x(60 min/hr)x(60s/min) =86,400 s • Astronomers refer to this 24 hour period as a mean solar day (§2-7), implying that this time period is measured with respect to the Sun’s position on the ...
Color of stars from hottest to coolest White The size of
... sun 1-,000,000 years to get from the core of the sun to its surface. The sun's mass is equal to 99.8% of total solar system Copernicus was the first to say the earth revolves around the sun The sun makes life possible. lt gives us food, energy, seasons, weather plants, and ...
... sun 1-,000,000 years to get from the core of the sun to its surface. The sun's mass is equal to 99.8% of total solar system Copernicus was the first to say the earth revolves around the sun The sun makes life possible. lt gives us food, energy, seasons, weather plants, and ...
Intermediate - Maggie`s Earth Adventures
... red button and play the Science Diagramming game. Even if you are not currently studying any of the topics presented on the charts, it is good reading practice and will also improve study skills and concentration! Happy teaching, Kathy Answer Key: 1. Jan.2 2. 333,000 times 3. Hydrogen 4. 12,756 km 5 ...
... red button and play the Science Diagramming game. Even if you are not currently studying any of the topics presented on the charts, it is good reading practice and will also improve study skills and concentration! Happy teaching, Kathy Answer Key: 1. Jan.2 2. 333,000 times 3. Hydrogen 4. 12,756 km 5 ...
Jeopardy 2015
... 100 billion stars The Milky Way Contains which of the following: 100,000 stars 100 million stars 100 Billion stars ...
... 100 billion stars The Milky Way Contains which of the following: 100,000 stars 100 million stars 100 Billion stars ...
Motions in the Heaven
... the equatorial plane of the Earth The north celestial pole is coincident with the north pole of the Earth Plane of sun's movement not the same as equatorial plane The two planes are tilted with respect to each other at an angle of 23.5 degrees The path of the sun is called the ecliptic Astronomy 1-1 ...
... the equatorial plane of the Earth The north celestial pole is coincident with the north pole of the Earth Plane of sun's movement not the same as equatorial plane The two planes are tilted with respect to each other at an angle of 23.5 degrees The path of the sun is called the ecliptic Astronomy 1-1 ...
The Earth`s Orbital Velocity
... (spectra) of the star Arcturus (α Boötis) to determine these values. You will also become familiar with the difficulties of making astronomical measurements and the uncertainties in the results. This lab will follow the procedures outlined in the Sky and Telescope reprint entitled "The Earth's Orbit ...
... (spectra) of the star Arcturus (α Boötis) to determine these values. You will also become familiar with the difficulties of making astronomical measurements and the uncertainties in the results. This lab will follow the procedures outlined in the Sky and Telescope reprint entitled "The Earth's Orbit ...
Astronomy 2 Relativity and Gravitation
... - It relies on an objective classification – i.e. measurement-based classification - It is possible to classify every object by measuring the flux through standard filters. - Avoids ‘digitisation’ of the HR diagram, as classification not based on presence or absence of discrete features in spectrum. ...
... - It relies on an objective classification – i.e. measurement-based classification - It is possible to classify every object by measuring the flux through standard filters. - Avoids ‘digitisation’ of the HR diagram, as classification not based on presence or absence of discrete features in spectrum. ...
The Solar System - Solon City Schools
... planets. Aristotle stated that the earth was in the center of the solar system. Ptolemy stated that the earth was in the center of the universe. He thought that the planets moved in small circles as they moved around the sun. ...
... planets. Aristotle stated that the earth was in the center of the solar system. Ptolemy stated that the earth was in the center of the universe. He thought that the planets moved in small circles as they moved around the sun. ...
Chapter 3
... 1. The point in the sky directly overhead. 2. The circle dividing the sky into eastern and western halves. 3. Locate the North Celestial Pole precisely in the Bryan sky. 4. Over what point on Earth is the North Celestial Pole? 5. The Celestial Equator is a circle on the sky that crosses the horizon ...
... 1. The point in the sky directly overhead. 2. The circle dividing the sky into eastern and western halves. 3. Locate the North Celestial Pole precisely in the Bryan sky. 4. Over what point on Earth is the North Celestial Pole? 5. The Celestial Equator is a circle on the sky that crosses the horizon ...
Layers of the Sun
... Just above the photosphere is the CHROMOSPHERE with huge solar flares and loops of hot gases shooting up thousands of miles. Things begin to heat up again here—the temperature is estimated to be 50,000 degrees F. And above the chromosphere is the CORONA—we can only see it during a total solar eclips ...
... Just above the photosphere is the CHROMOSPHERE with huge solar flares and loops of hot gases shooting up thousands of miles. Things begin to heat up again here—the temperature is estimated to be 50,000 degrees F. And above the chromosphere is the CORONA—we can only see it during a total solar eclips ...
here
... Changes height in the sky Changes in intensity Changes in temperature Changes distance from the Earth ...
... Changes height in the sky Changes in intensity Changes in temperature Changes distance from the Earth ...
The Sun
... so that there can be life on our planet. There are stars that are much larger than our sun. A star in the Orion constellation called Betelgeuse is 400 times larger than our sun. If our sun was this size it would engulf Mercury, Venus, Earth and Mars. ...
... so that there can be life on our planet. There are stars that are much larger than our sun. A star in the Orion constellation called Betelgeuse is 400 times larger than our sun. If our sun was this size it would engulf Mercury, Venus, Earth and Mars. ...
1 Introduction - Numerical Recipes
... \candles." Historically this of course had no meaning until Joule discovered the \mechanical equivalent of heat" (calories per joule) in 1847; before that we could only discuss L in calories/s: Sun ...
... \candles." Historically this of course had no meaning until Joule discovered the \mechanical equivalent of heat" (calories per joule) in 1847; before that we could only discuss L in calories/s: Sun ...
Halley`s Comet Project Calculus III
... In 1705 Edmnnd Halley predicted, using Newton’s newly formulated laws of motion, that the comets seen in 1531, 1607, and 1682 are all the same comet and would return in 1758 (which was, alas, after his death). The comet did indeed return as predicted and was later named in his honor. The average per ...
... In 1705 Edmnnd Halley predicted, using Newton’s newly formulated laws of motion, that the comets seen in 1531, 1607, and 1682 are all the same comet and would return in 1758 (which was, alas, after his death). The comet did indeed return as predicted and was later named in his honor. The average per ...
AST 105 HW #1 Solution Week of August 24 , 2015
... Latitude measures angular distance north or south of Earth's equator. Longitude measures angular distance east or west of the Prime Meridian, the meridian in Greenwich, England. The night sky changes with latitude, because it changes the portion of the celestial sphere that can be above your horizon ...
... Latitude measures angular distance north or south of Earth's equator. Longitude measures angular distance east or west of the Prime Meridian, the meridian in Greenwich, England. The night sky changes with latitude, because it changes the portion of the celestial sphere that can be above your horizon ...
Equation of time
The equation of time describes the discrepancy between two kinds of solar time. These are apparent solar time, which directly tracks the motion of the sun, and mean solar time, which tracks a fictitious ""mean"" sun with noons 24 hours apart. Apparent (or true) solar time can be obtained by measurement of the current position (hour angle) of the Sun, or indicated (with limited accuracy) by a sundial. Mean solar time, for the same place, would be the time indicated by a steady clock set so that over the year its differences from apparent solar time average to zero.The equation of time is the east or west component of the analemma, a curve representing the angular offset of the Sun from its mean position on the celestial sphere as viewed from Earth. The equation of time values for each day of the year, compiled by astronomical observatories, were widely listed in almanacs and ephemerides.