DR The Sun File
... 42. How much hydrogen is changed into helium in the sun every second? ______________________________________________________________ 43. What subatomic particle is given off during fusion? ______________________________________________________________ 44. How long does it take neutrinos that escape ...
... 42. How much hydrogen is changed into helium in the sun every second? ______________________________________________________________ 43. What subatomic particle is given off during fusion? ______________________________________________________________ 44. How long does it take neutrinos that escape ...
CELESTIAL COORDINATES
... From a latitude of 40°, an object with a declination of +40° will, at some point in time during the day or night, pass directly overhead through the zenith. In general Declination at zenith = Latitude of observer The 24 Ephemeris Stars in the SBO Catalog of Astronomical Objects have Object Numbers r ...
... From a latitude of 40°, an object with a declination of +40° will, at some point in time during the day or night, pass directly overhead through the zenith. In general Declination at zenith = Latitude of observer The 24 Ephemeris Stars in the SBO Catalog of Astronomical Objects have Object Numbers r ...
APSU_1000_35 Liberal Arts Univ. Life
... • If you put all the planets in the solar system, they would not fill up the volume of the Sun • 110 Earths or 10 Jupiters fit across the diameter of the Sun How big is the Sun? ...
... • If you put all the planets in the solar system, they would not fill up the volume of the Sun • 110 Earths or 10 Jupiters fit across the diameter of the Sun How big is the Sun? ...
Resources - gmu ttac - George Mason University
... 4. Have the students continue to orbit their Earth, keeping the axis pointing to Polaris as always, until the axis is pointing in the direction away from the sun. Again, have them rotate their Earth so that the pin person is in the noon-day sun. Ask the same questions as before. Also, ask them wheth ...
... 4. Have the students continue to orbit their Earth, keeping the axis pointing to Polaris as always, until the axis is pointing in the direction away from the sun. Again, have them rotate their Earth so that the pin person is in the noon-day sun. Ask the same questions as before. Also, ask them wheth ...
Part II: Ideas in Conflict.
... this is the time of the quiet sun. At other times, there appear to be magnetic “storms” that move across the Sun’s surface. The severity and number of these storms varies greatly from time to time. ...
... this is the time of the quiet sun. At other times, there appear to be magnetic “storms” that move across the Sun’s surface. The severity and number of these storms varies greatly from time to time. ...
Solar Presentation
... Sunspot Cycle (a) Annual number of sunspots throughout the twentieth century, showing the five-year average of the annual data to make long-term trends more evident. The (roughly) 11-year solar cycle is clearly visible. At the time of solar minimum, hardly any sunspots are seen. About four years l ...
... Sunspot Cycle (a) Annual number of sunspots throughout the twentieth century, showing the five-year average of the annual data to make long-term trends more evident. The (roughly) 11-year solar cycle is clearly visible. At the time of solar minimum, hardly any sunspots are seen. About four years l ...
Basic Solar Positional Astronomy
... which takes the place of the real Sun and tells such time. One cannot see an imaginary sun. But, since the Stars do appear to move uniformly around the Equator, they are used to measure Sidereal Time. This, in turn, with a suitable conversion, is used to determine accurate Mean Time. The discrepancy ...
... which takes the place of the real Sun and tells such time. One cannot see an imaginary sun. But, since the Stars do appear to move uniformly around the Equator, they are used to measure Sidereal Time. This, in turn, with a suitable conversion, is used to determine accurate Mean Time. The discrepancy ...
Sun`s Exterior
... A. Because the Sun’s gravity is so weak there. B. Because of the large number of neutrinos there. C. Because the gas is so hot there. ...
... A. Because the Sun’s gravity is so weak there. B. Because of the large number of neutrinos there. C. Because the gas is so hot there. ...
Colorado Model Solar System
... Designate one person in your group to count paces between the planets and another person to time the trip. Walk at a normal pace between the Sun and Mercury and record your paces and time values in columns 1 and 2 of Table 1. Use the information given on the plaque to fill in columns 3-8 of Table 1 ...
... Designate one person in your group to count paces between the planets and another person to time the trip. Walk at a normal pace between the Sun and Mercury and record your paces and time values in columns 1 and 2 of Table 1. Use the information given on the plaque to fill in columns 3-8 of Table 1 ...
Name: Mercury - High Point University
... The rotational period of Venus is 243 Earth days. Its orbital period (period of revolution) is 225 Earth days. Venus rotates “backwards” compared to the other planets (though Uranus and Pluto orbit on their sides, meaning that their axis of rotation is nearly in the ecliptic plane). By “backwards” w ...
... The rotational period of Venus is 243 Earth days. Its orbital period (period of revolution) is 225 Earth days. Venus rotates “backwards” compared to the other planets (though Uranus and Pluto orbit on their sides, meaning that their axis of rotation is nearly in the ecliptic plane). By “backwards” w ...
Lecture 1: Properties of the Solar System
... o What about the densities of the outer planets? o Might expect the outer planets, which are very massive, to be much more compressed than the inner planets, and so more dense. o In fact, these heavier bodies are less dense than the inner, terrestrial planets. o The only composition which we can use ...
... o What about the densities of the outer planets? o Might expect the outer planets, which are very massive, to be much more compressed than the inner planets, and so more dense. o In fact, these heavier bodies are less dense than the inner, terrestrial planets. o The only composition which we can use ...
Fulltext PDF - Indian Academy of Sciences
... angle of about 23°26'21" from its orbital plane. Thus the celestial equator (which determines time measurements) and the ecliptic make a considerable angle (23°26'21"). Due to these two factors, the duration of a solar day is not uniform. One therefore considers the mean solar day (madhya siivana di ...
... angle of about 23°26'21" from its orbital plane. Thus the celestial equator (which determines time measurements) and the ecliptic make a considerable angle (23°26'21"). Due to these two factors, the duration of a solar day is not uniform. One therefore considers the mean solar day (madhya siivana di ...
navigation - Claire Lambe Home
... There is a place marked Thule in north-west Greenland and is the name given to a highly developed and specialized pre-historic Eskimo culture. Pytheas pobably determined his course by throwing overboard a small log tied to a knotted line which as it drifted astern and the line was payed out, the num ...
... There is a place marked Thule in north-west Greenland and is the name given to a highly developed and specialized pre-historic Eskimo culture. Pytheas pobably determined his course by throwing overboard a small log tied to a knotted line which as it drifted astern and the line was payed out, the num ...
Guide to the Sun Poster PDF
... magnetic field, the magnetic pressure increases while the surrounding atmospheric pressure decreases. This in turn lowers the temperature relative to its surroundings because the concentrated magnetic field inhibits the flow of hot, new gas from the Sun's interior to the surface. Sunspots tend to oc ...
... magnetic field, the magnetic pressure increases while the surrounding atmospheric pressure decreases. This in turn lowers the temperature relative to its surroundings because the concentrated magnetic field inhibits the flow of hot, new gas from the Sun's interior to the surface. Sunspots tend to oc ...
Sample pages 2 PDF
... the date is computed using an origin at the First of January 4713 BC: all relevant dates for astronomy are described by positive numbers. As a convention, days are starting at noon. For reference, the Julian Day 2450000 occurred on October 9, 1995, at 12 h. To avoid long numbers, the Julian Date sys ...
... the date is computed using an origin at the First of January 4713 BC: all relevant dates for astronomy are described by positive numbers. As a convention, days are starting at noon. For reference, the Julian Day 2450000 occurred on October 9, 1995, at 12 h. To avoid long numbers, the Julian Date sys ...
Right Ascension and Declination
... Declination is the astronomical equivalent of latitude. Declination is an angular distance of a point north or south of the Celestial Equator, a projection of the Earth’s equator into space. Declination is measured in degrees from -90° to +90°. • Celestial South Pole = -90° declination • Celestial E ...
... Declination is the astronomical equivalent of latitude. Declination is an angular distance of a point north or south of the Celestial Equator, a projection of the Earth’s equator into space. Declination is measured in degrees from -90° to +90°. • Celestial South Pole = -90° declination • Celestial E ...
The Sun and the Stars
... the sky. Some are much larger than the Sun and others are smaller than the Earth. They all look tiny because they are so far away from the Earth. This distance is measured in light-years, not in miles or kilometers. (One light-year is equal to the distance that light travels in one year. This is ab ...
... the sky. Some are much larger than the Sun and others are smaller than the Earth. They all look tiny because they are so far away from the Earth. This distance is measured in light-years, not in miles or kilometers. (One light-year is equal to the distance that light travels in one year. This is ab ...
Basics – II. Time, Magnitudes and Spectral types
... or month, nor months in a year. This means that they all tend to either slowly get out of phase with the year or need some jiggling to stay in phase. ...
... or month, nor months in a year. This means that they all tend to either slowly get out of phase with the year or need some jiggling to stay in phase. ...
Prominences in H alpha and He II Spectrum of the Sun
... There are a lot of solar space telescopes. Even though the Sun is the closest star to our planet, it is still a big mystery. These telescopes help us very much and are crucial part of studying the Sun as a whole. From OSO (Orbiting Solar Observatories), Skylab and SMM (Solar Maximum Mission) to the ...
... There are a lot of solar space telescopes. Even though the Sun is the closest star to our planet, it is still a big mystery. These telescopes help us very much and are crucial part of studying the Sun as a whole. From OSO (Orbiting Solar Observatories), Skylab and SMM (Solar Maximum Mission) to the ...
10.00 points 10.00 points 10.00 points 10.00 points 10.00 points
... The Sun's high internal temperatures prevent the atoms from bonding together to form a liquid or a solid. A large fraction of the Sun's interior is made of electromagnetic radiation (light). It is composed mostly of hydrogen. The Sun formed from the solar nebula which itself was a large gas and dust ...
... The Sun's high internal temperatures prevent the atoms from bonding together to form a liquid or a solid. A large fraction of the Sun's interior is made of electromagnetic radiation (light). It is composed mostly of hydrogen. The Sun formed from the solar nebula which itself was a large gas and dust ...
ISP205 Spring 2001 Exam #1 Study Guide
... 3. ecliptic - apparent path of the sun through the fixed stars. The planets lie mostly along the ecliptic. The constellations of the zodiac also lie along the ecliptic. 4. precession - the change in the location of the celestial north pole (26,000 year period). Know the difference between Geocentric ...
... 3. ecliptic - apparent path of the sun through the fixed stars. The planets lie mostly along the ecliptic. The constellations of the zodiac also lie along the ecliptic. 4. precession - the change in the location of the celestial north pole (26,000 year period). Know the difference between Geocentric ...
Solutions to exercises
... (a) The most favourable contrast ratio occurs when the vertical distance between Jupiter’s curve and the Sun’s is minimized. The two curves are converging as they disappear off the right-hand side of the figure, so the most favourable contrast ratio occurs for wavelengths around (or greater than) 100 ...
... (a) The most favourable contrast ratio occurs when the vertical distance between Jupiter’s curve and the Sun’s is minimized. The two curves are converging as they disappear off the right-hand side of the figure, so the most favourable contrast ratio occurs for wavelengths around (or greater than) 100 ...
Glossary of terms - Universal Workshop
... in 1989 to Cambridge). Because of the astronomical studies made here in the 18th century to help sailors and mapmakers determine longitude, the observatory was made 0° of the system of longitude on Earth; because of ...
... in 1989 to Cambridge). Because of the astronomical studies made here in the 18th century to help sailors and mapmakers determine longitude, the observatory was made 0° of the system of longitude on Earth; because of ...
How to Make a Solar System Necklace
... was even more encouraged in my project. The necklace went over very well at our club's Astronomy Day festivities on May 2, 1998. We made a total of 68 necklaces. The only reason we did not make more was that I ran out of some of the more critical necklace components. Several scout leaders and teache ...
... was even more encouraged in my project. The necklace went over very well at our club's Astronomy Day festivities on May 2, 1998. We made a total of 68 necklaces. The only reason we did not make more was that I ran out of some of the more critical necklace components. Several scout leaders and teache ...
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.