Universal Gravitation
... force of gravity, so it always moves at a constant speed The time it takes for a satellite to complete one orbit is called the period. Not all satellites follow a circular orbit. Some will travel along an oval path called an ellipse. ...
... force of gravity, so it always moves at a constant speed The time it takes for a satellite to complete one orbit is called the period. Not all satellites follow a circular orbit. Some will travel along an oval path called an ellipse. ...
Document
... Sun slowly creeps along the ecliptic, about a degree a day. • We’ll come back to this when we look at why we have seasons (outside of California). For now, let’s take a break from Celestial Spheres and consider the Phases of the Moon… ...
... Sun slowly creeps along the ecliptic, about a degree a day. • We’ll come back to this when we look at why we have seasons (outside of California). For now, let’s take a break from Celestial Spheres and consider the Phases of the Moon… ...
Evidence, Evolution & God`s Existence 4
... And God said, Let the waters under the heaven be gathered together unto one place, and let the dry land appear: and it was so. And God called the dry land Earth; and the gathering together of the waters called he Seas: and God saw that it was good. And God said, Let the earth bring forth grass, the ...
... And God said, Let the waters under the heaven be gathered together unto one place, and let the dry land appear: and it was so. And God called the dry land Earth; and the gathering together of the waters called he Seas: and God saw that it was good. And God said, Let the earth bring forth grass, the ...
origins of the Universe
... in the early 1900’s astronomers started to find evidence that pointed to a Big Bang. • In 1922, astronomer Edwin Hubble observed that the universe was expanding. The most distant galaxies he could see through his telescope were moving away at about 40 000 km per second. • This observation led to wha ...
... in the early 1900’s astronomers started to find evidence that pointed to a Big Bang. • In 1922, astronomer Edwin Hubble observed that the universe was expanding. The most distant galaxies he could see through his telescope were moving away at about 40 000 km per second. • This observation led to wha ...
Quantum Well Electron Gain Structures and Infrared Detector Arrays
... them to develop 3 guidelines that provided a good matching description • Newton later used his physical laws of motion to show WHY Kepler’s rules for planet motion worked ...
... them to develop 3 guidelines that provided a good matching description • Newton later used his physical laws of motion to show WHY Kepler’s rules for planet motion worked ...
1. What are the four branches of earth? -Geology
... North/South is divided into segments called latitude, which is measured in degrees. Full circle is 360 degrees. The distance between the pole and the equator is ¼ of 360 degrees so it is equivalent to 90 degrees. Above the equator is north and below is south. Each degree of latitude consists of 60 e ...
... North/South is divided into segments called latitude, which is measured in degrees. Full circle is 360 degrees. The distance between the pole and the equator is ¼ of 360 degrees so it is equivalent to 90 degrees. Above the equator is north and below is south. Each degree of latitude consists of 60 e ...
From the Everett and Seattle Astronomical
... Sun and have nearly circular orbit. Jupiter is the closest, orbiting at about 5.2 astronomical units. An astronomical unit is the distance from the Earth to the Sun. So Jupiter lies about 5 times as far from the Sun as Earth does, and almost 12 years to complete one orbit. But most of the extrasolar ...
... Sun and have nearly circular orbit. Jupiter is the closest, orbiting at about 5.2 astronomical units. An astronomical unit is the distance from the Earth to the Sun. So Jupiter lies about 5 times as far from the Sun as Earth does, and almost 12 years to complete one orbit. But most of the extrasolar ...
The Sun . . .
... appears to be from Earth ~ not very ‘scientific’. Main Sequence: Average, ordinary stars. ~ 90% of stars are main sequence. Supergiant: 20 to 200 times larger than the Sun, but also much brighter, cooler and less dense. Dwarf: Small stars; fairly hot but very dim. Diameter is about the same as Earth ...
... appears to be from Earth ~ not very ‘scientific’. Main Sequence: Average, ordinary stars. ~ 90% of stars are main sequence. Supergiant: 20 to 200 times larger than the Sun, but also much brighter, cooler and less dense. Dwarf: Small stars; fairly hot but very dim. Diameter is about the same as Earth ...
Gravitation and Orbital Motion
... 12. In June 2002, scientists at Caltech discovered a new orbiting body in the solar system, half the diameter of Pluto. Quaoar (KWAH-o-ar) takes 288 years to complete one orbit around the sun, and its orbit is remarkably circular. Find the distance from Quaoar to the sun (the sun's mass is 1.99×1030 ...
... 12. In June 2002, scientists at Caltech discovered a new orbiting body in the solar system, half the diameter of Pluto. Quaoar (KWAH-o-ar) takes 288 years to complete one orbit around the sun, and its orbit is remarkably circular. Find the distance from Quaoar to the sun (the sun's mass is 1.99×1030 ...
AST 101 Final Exam DO NOT open the exam until
... you go to the distant planet ”Weightlossian”, which is larger in size than the Earth, but has a much smaller mass than the Earth. The advertisement boasts that you’ll have shed pounds the moment you set foot on the planet. Based only on this claim, should you sign up for the weight loss program? a.) ...
... you go to the distant planet ”Weightlossian”, which is larger in size than the Earth, but has a much smaller mass than the Earth. The advertisement boasts that you’ll have shed pounds the moment you set foot on the planet. Based only on this claim, should you sign up for the weight loss program? a.) ...
Geology 001 Exam 1 Review – Planet Earth Updated 10/12 Review
... The Earth has continents because of this plate tectonic process, which has been making continental rock and adding it to the lithosphere for most of the history of the Earth. Important questions to be able to answer: Why does the Earth have so few impact craters relative to other planets such as th ...
... The Earth has continents because of this plate tectonic process, which has been making continental rock and adding it to the lithosphere for most of the history of the Earth. Important questions to be able to answer: Why does the Earth have so few impact craters relative to other planets such as th ...
The Future of Life on Earth Over the Next Few Billion Years
... critical distance at which the Earth's obliquity is allowed to ...
... critical distance at which the Earth's obliquity is allowed to ...
Finding your longitude The trickier part of celestial navigation
... • Arbitrary starting point • Longitude 0 degrees at Greenwich, England ...
... • Arbitrary starting point • Longitude 0 degrees at Greenwich, England ...
But how to find Polaris?
... • Another way : The occurrence of any time moves west at 15 degrees per hour. • So when you measure your solar noon if it is 2:00 PM in Greenwich (on prime meridian) you know you are 30 degrees west of Greenwich! ...
... • Another way : The occurrence of any time moves west at 15 degrees per hour. • So when you measure your solar noon if it is 2:00 PM in Greenwich (on prime meridian) you know you are 30 degrees west of Greenwich! ...
How many moons does Mercury have? (Update)
... But what about Mercury? result of massive collisions that caused a planet to If moons are such a common feature in the solar system, why is it that Mercury has none? Yes, if one were to ask how many satellites the planet closest to the sun has, that would be the short answer. But answering it more t ...
... But what about Mercury? result of massive collisions that caused a planet to If moons are such a common feature in the solar system, why is it that Mercury has none? Yes, if one were to ask how many satellites the planet closest to the sun has, that would be the short answer. But answering it more t ...
Astronomy Terms
... relation to the sun and Earth and how much sunlight is refelcted Waxing = when the visible portion of the moon is getting larger Waning = when the visible portion of the moon is getting smaller Gibbous = when more than a quarter of the moon is visible Crescent = when less than a quarter of the moon ...
... relation to the sun and Earth and how much sunlight is refelcted Waxing = when the visible portion of the moon is getting larger Waning = when the visible portion of the moon is getting smaller Gibbous = when more than a quarter of the moon is visible Crescent = when less than a quarter of the moon ...
Orbits and Applications
... B: The net force on it is zero. C: It is beyond the main pull of Earth’s gravity. D: It is being pulled by the Sun and planets as well as by Earth. E: none of the above The moon falls to earth all the time! There is a large force, F = GM(earth)M(moon)/R(earth to moon)^2 which pulls it towards us. Ac ...
... B: The net force on it is zero. C: It is beyond the main pull of Earth’s gravity. D: It is being pulled by the Sun and planets as well as by Earth. E: none of the above The moon falls to earth all the time! There is a large force, F = GM(earth)M(moon)/R(earth to moon)^2 which pulls it towards us. Ac ...
Inner and Outer Planets of the Solar System
... The Kuiper Belt is a disk-shaped region past the orbit of Neptune extending roughly from 30 to 50 AU from the Sun containing many small icy bodies. (An AU or Astronomical Unit is the mean distance from the Earth to the Sun). The Kuiper Belt has a large population (over 70,000) of small bodies. It is ...
... The Kuiper Belt is a disk-shaped region past the orbit of Neptune extending roughly from 30 to 50 AU from the Sun containing many small icy bodies. (An AU or Astronomical Unit is the mean distance from the Earth to the Sun). The Kuiper Belt has a large population (over 70,000) of small bodies. It is ...
The Seasons Interactive - Home
... Is the model to scale? How far is the Moon from Earth? The Moon is 240,000 miles from Earth, or about 30 Earth diameters. Demo: Show how far away the Moon would be, and describe where the Sun would be. (Sun is 93 million miles away, about 12,000 Earth diameters! Before you do the demo, measure out t ...
... Is the model to scale? How far is the Moon from Earth? The Moon is 240,000 miles from Earth, or about 30 Earth diameters. Demo: Show how far away the Moon would be, and describe where the Sun would be. (Sun is 93 million miles away, about 12,000 Earth diameters! Before you do the demo, measure out t ...
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 ...
Galileo & the Telescope— Sept 20
... fixed stars, the Milky Way, nebulous stars, but especially about the four planets flying around the star of Jupiter at unequal intervals and periods with wonderful swiftness; which unknown by anyone until this day, the first author detected recently and decided to name Midicean Stars. Venice ...
... fixed stars, the Milky Way, nebulous stars, but especially about the four planets flying around the star of Jupiter at unequal intervals and periods with wonderful swiftness; which unknown by anyone until this day, the first author detected recently and decided to name Midicean Stars. Venice ...
Geocentric model
In astronomy, the geocentric model (also known as geocentrism, or the Ptolemaic system) is a description of the cosmos where Earth is at the orbital center of all celestial bodies. This model served as the predominant cosmological system in many ancient civilizations such as ancient Greece including the noteworthy systems of Aristotle (see Aristotelian physics) and Ptolemy. As such, they believed that the Sun, Moon, stars, and naked eye planets circled Earth.Two commonly made observations supported the idea that Earth was the center of the Universe. The stars, the sun, and planets appear to revolve around Earth each day, making Earth the center of that system. The stars were thought to be on a celestial sphere, with the earth at its center, that rotated each day, using a line through the north and south pole as an axis. The stars closest to the equator appeared to rise and fall the greatest distance, but each star circled back to its rising point each day. The second observation supporting the geocentric model was that the Earth does not seem to move from the perspective of an Earth-bound observer, and that it is solid, stable, and unmoving.Ancient Roman and medieval philosophers usually combined the geocentric model with a spherical Earth. It is not the same as the older flat Earth model implied in some mythology, as was the case with the biblical and postbiblical Latin cosmology. The ancient Jewish Babylonian uranography pictured a flat Earth with a dome-shaped rigid canopy named firmament placed over it. (רקיע- rāqîa').However, the ancient Greeks believed that the motions of the planets were circular and not elliptical, a view that was not challenged in Western culture until the 17th century through the synthesis of theories by Copernicus and Kepler.The astronomical predictions of Ptolemy's geocentric model were used to prepare astrological and astronomical charts for over 1500 years. The geocentric model held sway into the early modern age, but from the late 16th century onward was gradually superseded by the heliocentric model of Copernicus, Galileo and Kepler. There was much resistance to the transition between these two theories. Christian theologians were reluctant to reject a theory that agreed with Bible passages (e.g. ""Sun, stand you still upon Gibeon"", Joshua 10:12 – King James 2000 Bible). Others felt a new, unknown theory could not subvert an accepted consensus for geocentrism.