Mercury - High Point University
... interval for Mercury to orbit Sun (relative to the stars), for Mercury is 88 days (and when I say “day” as a unit, I am referring to Earth days). Mercury’s period of rotation, the time interval to rotate once about its axis (relative to the stars), is 59 days–this is 2/3 of the orbital period of Mer ...
... interval for Mercury to orbit Sun (relative to the stars), for Mercury is 88 days (and when I say “day” as a unit, I am referring to Earth days). Mercury’s period of rotation, the time interval to rotate once about its axis (relative to the stars), is 59 days–this is 2/3 of the orbital period of Mer ...
The Prague Astronomical Clock
... hour depends on the season. Near the Summer Solstice, a Babylonian hour is 81 minutes long; near the Winter Solstice only 41 minutes long. Babylonian time is shown by the position of the sunburst relative to the curved lines and is read with the black Arabic numbers inside the gold Roman numeral sc ...
... hour depends on the season. Near the Summer Solstice, a Babylonian hour is 81 minutes long; near the Winter Solstice only 41 minutes long. Babylonian time is shown by the position of the sunburst relative to the curved lines and is read with the black Arabic numbers inside the gold Roman numeral sc ...
apparent retrograde motion - Indiana University Astronomy
... commonly known as the North Star, made the very short bright circle near the NCP. About 12,000 years ago, the bright star Vega was the North Star, and in about 14,000 years, as the Earth's spin axis slowly continues to precess, Vega will become the North ...
... commonly known as the North Star, made the very short bright circle near the NCP. About 12,000 years ago, the bright star Vega was the North Star, and in about 14,000 years, as the Earth's spin axis slowly continues to precess, Vega will become the North ...
Lab 1: The Celestial Sphere
... 4. At the vernal (spring) equinox, what constellation is the sun in? _____________________________________________________________________________ 5. The Earth's rotational axis is not perpendicular to the ecliptic plane; instead, it is tilted by 23.5. As the Earth revolves around the Sun, its tilt ...
... 4. At the vernal (spring) equinox, what constellation is the sun in? _____________________________________________________________________________ 5. The Earth's rotational axis is not perpendicular to the ecliptic plane; instead, it is tilted by 23.5. As the Earth revolves around the Sun, its tilt ...
KEPLER`S LAWS OF PLANETARY MOTION NAME: Date: Purpose
... Purpose: To understand Kepler’s Laws describing the movements of planets in the solar system. Background: In the 1500s, Nicolaus Copernicus challenged the GEOCENTRIC (earth-centered) model of the solar system that had been promoted and accepted by philosophers and astronomers such as Aristotle and P ...
... Purpose: To understand Kepler’s Laws describing the movements of planets in the solar system. Background: In the 1500s, Nicolaus Copernicus challenged the GEOCENTRIC (earth-centered) model of the solar system that had been promoted and accepted by philosophers and astronomers such as Aristotle and P ...
AST301.Ch16.Sun
... were thought to be implausible for many years, but: 1998: Kamioka group reports evidence of neutrino oscillations. 2001: Ontario Sudbury Neutrino Observatory confirms, at just the level to explain the “missing” solar neutrinos. So after over 40 years, the mystery is solved, and theoretical models fo ...
... were thought to be implausible for many years, but: 1998: Kamioka group reports evidence of neutrino oscillations. 2001: Ontario Sudbury Neutrino Observatory confirms, at just the level to explain the “missing” solar neutrinos. So after over 40 years, the mystery is solved, and theoretical models fo ...
Astronomy 15 - Homework 3 - Due Wed. April 24 1) As we`ll see
... Many variants of the diagram exist in which the quantities plotted are not strictly the surface temperature and the luminosity, but some closely related observed quantity. For now, we’ll consider the so-called ‘theoretical’ HR diagram, in which the quantities plotted are Teff and the actual luminosi ...
... Many variants of the diagram exist in which the quantities plotted are not strictly the surface temperature and the luminosity, but some closely related observed quantity. For now, we’ll consider the so-called ‘theoretical’ HR diagram, in which the quantities plotted are Teff and the actual luminosi ...
Conservation of Momentum
... r; P; and %. Obviously we can solve this mechanical problem only if we can express one of them in terms of the others, for example, the density % as a function of P . In general, this will not be the case. But there are some exceptional situations where % is a well-known function of P and r or P and ...
... r; P; and %. Obviously we can solve this mechanical problem only if we can express one of them in terms of the others, for example, the density % as a function of P . In general, this will not be the case. But there are some exceptional situations where % is a well-known function of P and r or P and ...
The Sun - Our Star - Academic Computer Center
... The Sun’s Energy Source • The Sun is not burning. If it were burning fuel like coal it would have exhausted its fuel long ago. • The slow collapse of the Sun was once thought to be the energy source but that wouldn’t have lasted more than a few million years. • It wasn’t until the 20th century that ...
... The Sun’s Energy Source • The Sun is not burning. If it were burning fuel like coal it would have exhausted its fuel long ago. • The slow collapse of the Sun was once thought to be the energy source but that wouldn’t have lasted more than a few million years. • It wasn’t until the 20th century that ...
![Assignment 2 — Solutions [Revision : 1.3]](http://s1.studyres.com/store/data/002192877_1-a47428803f1a40e19ac72f9284c255e1-300x300.png)
Assignment 2 — Solutions [Revision : 1.3]
... is always scheduled in integer multiples of this 97-minute orbital period.) (b). In a geosynchronous orbit, the orbital period is exactly equal to one day. Using the approximate form of Kepler’s third law above, for P = 1 d the orbital radius is a = 4.22 × 107 m. Thus, the altitude of the orbit is a ...
... is always scheduled in integer multiples of this 97-minute orbital period.) (b). In a geosynchronous orbit, the orbital period is exactly equal to one day. Using the approximate form of Kepler’s third law above, for P = 1 d the orbital radius is a = 4.22 × 107 m. Thus, the altitude of the orbit is a ...
Class Project Physics 1010-042, Physics 1010
... advanced than we are. If they are a lot more advanced than us they could probably travel to us. Why this is a paradox is because if those intelligent life forms are more advanced and can travel through space “where are they?” 2. List and briefly explain (like in a paragraph for each) 4 possible res ...
... advanced than we are. If they are a lot more advanced than us they could probably travel to us. Why this is a paradox is because if those intelligent life forms are more advanced and can travel through space “where are they?” 2. List and briefly explain (like in a paragraph for each) 4 possible res ...
TOPIC 14 – MOTIONS OF EARTH, MOON, SUN
... 55. Except during lunar eclipses, how much of the moon is always receiving light from the sun? __________________________________________ 56. Why does an observer on Earth see varying amounts of this lighted half as the moon moves in its orbit? _________________________________ 57. What are the moon ...
... 55. Except during lunar eclipses, how much of the moon is always receiving light from the sun? __________________________________________ 56. Why does an observer on Earth see varying amounts of this lighted half as the moon moves in its orbit? _________________________________ 57. What are the moon ...
Orbits
... the Earth, but go through epicycles. Their orbits have the same period as the Sun’s period around the Earth Observable - Mars, Jupiter, & Saturn are not restricted to close proximity to the Sun, & are seen to make loops in the sky during opposition with the Sun. Ma, J, & Sa’s have different orbital ...
... the Earth, but go through epicycles. Their orbits have the same period as the Sun’s period around the Earth Observable - Mars, Jupiter, & Saturn are not restricted to close proximity to the Sun, & are seen to make loops in the sky during opposition with the Sun. Ma, J, & Sa’s have different orbital ...
PP 23-The Solar System
... It's the hottest and most dense part of the Sun, having a temperature of 1.5 million °C and a density 150 times greater than that of water. ...
... It's the hottest and most dense part of the Sun, having a temperature of 1.5 million °C and a density 150 times greater than that of water. ...
Lab Activity on Variations in the Apparent Daily Path of
... • On the winter solstice (December 21), the angle of the noonday sun = 90°– (your latitude) – 23.5° ...
... • On the winter solstice (December 21), the angle of the noonday sun = 90°– (your latitude) – 23.5° ...
Define the following terms in the space provided
... parsec (pc) 3.08567802× 1013 km = 206,265 A.U. sidereal year 365.2564 days tropical year 365.2422 days Gregorian year 365.2425 days Earth mass 5.9736× 1024 kilograms Sun mass 1.9891× 1030 kg = 332,980 × Earth mean Earth radius 6371 kilometers Sun radius 6.96265 × 105 km = 109 × Earth Sun luminosity ...
... parsec (pc) 3.08567802× 1013 km = 206,265 A.U. sidereal year 365.2564 days tropical year 365.2422 days Gregorian year 365.2425 days Earth mass 5.9736× 1024 kilograms Sun mass 1.9891× 1030 kg = 332,980 × Earth mean Earth radius 6371 kilometers Sun radius 6.96265 × 105 km = 109 × Earth Sun luminosity ...
5 Sun`s Motion
... Point 2: The same star reaches the meridian (sidereal day) Point 3: The sun has again returned to meridian (solar day) It takes an extra four minutes to go from Point 2 to 3. ...
... Point 2: The same star reaches the meridian (sidereal day) Point 3: The sun has again returned to meridian (solar day) It takes an extra four minutes to go from Point 2 to 3. ...
The Sun: Our Extraordinary Ordinary Star
... Solar Activities and Communication • Solar activity associated with sun spots result in massive amounts of radiation and charged particles being ejected into space. • When this material overwhelms the protective Van Allen Belt layer of our atmosphere all electromagnetic activities can be interrupt ...
... Solar Activities and Communication • Solar activity associated with sun spots result in massive amounts of radiation and charged particles being ejected into space. • When this material overwhelms the protective Van Allen Belt layer of our atmosphere all electromagnetic activities can be interrupt ...
Solar Radiation and Warming Temperatures
... 1. Tell students that today they will be learning how seasons work and how it impacts their climate and weather. 2. Ask the students: “How many seasons are there? What are they called? When do they begin and end? What are the signs that the season is going to begin or end (i.e flowers bloom)? What c ...
... 1. Tell students that today they will be learning how seasons work and how it impacts their climate and weather. 2. Ask the students: “How many seasons are there? What are they called? When do they begin and end? What are the signs that the season is going to begin or end (i.e flowers bloom)? What c ...
Our Star: The Sun
... ionized gas stem from groups of sunspots. They are thought to be caused by ...
... ionized gas stem from groups of sunspots. They are thought to be caused by ...
Earth, Moon & Sun System
... path is higher in the sky in the summer. • The sun follows a lower path (closer to the horizon) in the sky in the winter. ...
... path is higher in the sky in the summer. • The sun follows a lower path (closer to the horizon) in the sky in the winter. ...
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.