Eratosthenes Determines the Size of the Earth in about 200 B.C.
... “ecliptic”, which is tilted 23.5° with respect to the celestial equator. • It appears to us that the Sun travels around the Celestial Sphere once a year. A parallax effect: as we orbit Sun, it is projected against different stars. After 1 year, it returns to same position relative to the stars (ecl ...
... “ecliptic”, which is tilted 23.5° with respect to the celestial equator. • It appears to us that the Sun travels around the Celestial Sphere once a year. A parallax effect: as we orbit Sun, it is projected against different stars. After 1 year, it returns to same position relative to the stars (ecl ...
Earth has formed in our solar system
... because of cooling • Hence location is important for planetary composition (planets closer to the sun should be more refractory) • Interaction of large body at final stages could change composition considerably ...
... because of cooling • Hence location is important for planetary composition (planets closer to the sun should be more refractory) • Interaction of large body at final stages could change composition considerably ...
sky science study notes
... ‘gnomon’. To work best, a sundial must be designed for a specific place on the planet and adjusted for the time of year. ...
... ‘gnomon’. To work best, a sundial must be designed for a specific place on the planet and adjusted for the time of year. ...
How Big Is Big
... 14. How Big Is REALLY Big? Every dot of light in the picture is a ____________. 15. Galaxies are collections of hundreds of _________ of stars. A galaxy is ________ times larger than the largest star. Many if not most stars have their own planets – called ____________. In every direction you can poi ...
... 14. How Big Is REALLY Big? Every dot of light in the picture is a ____________. 15. Galaxies are collections of hundreds of _________ of stars. A galaxy is ________ times larger than the largest star. Many if not most stars have their own planets – called ____________. In every direction you can poi ...
Lab Activity on Variations in the Apparent Daily Path of
... Earth inside the Celestial Sphere to spin. Notice that the stars do not move, only the Earth does (the moon and the other planets would too--if they were incorporated into this model). 2. In order to model the sky as seen from Chico, tilt and rotate the model celestial sphere until Chico is at the “ ...
... Earth inside the Celestial Sphere to spin. Notice that the stars do not move, only the Earth does (the moon and the other planets would too--if they were incorporated into this model). 2. In order to model the sky as seen from Chico, tilt and rotate the model celestial sphere until Chico is at the “ ...
One way to measure distance
... index finger at me. Close one eye then open the other. What happens? ...
... index finger at me. Close one eye then open the other. What happens? ...
Name - MIT
... A) the universe will stop expanding and start contracting B) the universe will continue expanding C) the universe will start forming more supernovas D) the universe will start forming more stars E) the universe will start becoming warmer 11) The force that binds protons together in the nucleus is ca ...
... A) the universe will stop expanding and start contracting B) the universe will continue expanding C) the universe will start forming more supernovas D) the universe will start forming more stars E) the universe will start becoming warmer 11) The force that binds protons together in the nucleus is ca ...
Presentation
... model that allowed prediction of planetary positions. • What are Kepler’s three laws of planetary motion? • (1) The orbit of each planet is an ellipse with the Sun at one focus. (2) As a planet moves around its orbit, it sweeps out equal areas in equal times. (3) More distant planets orbit the Sun a ...
... model that allowed prediction of planetary positions. • What are Kepler’s three laws of planetary motion? • (1) The orbit of each planet is an ellipse with the Sun at one focus. (2) As a planet moves around its orbit, it sweeps out equal areas in equal times. (3) More distant planets orbit the Sun a ...
The Sun and the Stars
... 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 about six trillion miles or ten trillion kilometers!) Stars look like they are twinkling because when we see them, we 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 about six trillion miles or ten trillion kilometers!) Stars look like they are twinkling because when we see them, we are ...
IQ 2
... IQ • True! The Earth’s rotation causes the entire sky to appear to sweep from east to west once each day. • This is (generally) the “fastest” motion we notice. • The Earth’s rotation axis points at the north and south poles of the “celestial sphere.” • The Earth’s equator projects to the equator of ...
... IQ • True! The Earth’s rotation causes the entire sky to appear to sweep from east to west once each day. • This is (generally) the “fastest” motion we notice. • The Earth’s rotation axis points at the north and south poles of the “celestial sphere.” • The Earth’s equator projects to the equator of ...
Sample pages 2 PDF
... • Zenith, Nadir: the points above and below the observer. • Meridian: the great circle that intercepts the poles, the zenith, and the nadir. The celestial objects show an apparent motion in the sky, rising, achieving a maximum altitude above the horizon, and setting. The objects can be observable du ...
... • Zenith, Nadir: the points above and below the observer. • Meridian: the great circle that intercepts the poles, the zenith, and the nadir. The celestial objects show an apparent motion in the sky, rising, achieving a maximum altitude above the horizon, and setting. The objects can be observable du ...
Solar System where_are_we
... Galaxy Because we dwell within the Milky Way Galaxy, it is impossible for us to take a picture of its spiral structure from the outside. But we do know that our Milky Way has a spiral nature from observations made from within our Galaxy (though whether or not it is a barred spiral is still being deb ...
... Galaxy Because we dwell within the Milky Way Galaxy, it is impossible for us to take a picture of its spiral structure from the outside. But we do know that our Milky Way has a spiral nature from observations made from within our Galaxy (though whether or not it is a barred spiral is still being deb ...
Quiz Questions
... D. heat from gravitational contraction 4. Why does hydrogen fusion only occur in the deep interiors of the Sun (and other stars)? A. because this is the only place in the Sun where there is sufficient hydrogen B. because only in the core is the temperature low enough and the density high enough C. b ...
... D. heat from gravitational contraction 4. Why does hydrogen fusion only occur in the deep interiors of the Sun (and other stars)? A. because this is the only place in the Sun where there is sufficient hydrogen B. because only in the core is the temperature low enough and the density high enough C. b ...
astronomy ch 2 - Fort Thomas Independent Schools
... How much force does it take to keep an object moving in a straight line at a constant speed? Unless an object is subject to an outside force, it takes no force at all to keep it moving in a straight line at a constant speed. How does an object’s mass differ when measured on the Earth and on the Moon ...
... How much force does it take to keep an object moving in a straight line at a constant speed? Unless an object is subject to an outside force, it takes no force at all to keep it moving in a straight line at a constant speed. How does an object’s mass differ when measured on the Earth and on the Moon ...
Our Solar System
... Our Solar System • Jupiter (5th planet from the Sun) – Largest planet in our solar system. – Its outer layer are made up of swirling gases. – Jupiter’s atmosphere is very colorful and it has an are called the Great Red Spot. • This spot is a storm that has been raging from hundreds of years and is ...
... Our Solar System • Jupiter (5th planet from the Sun) – Largest planet in our solar system. – Its outer layer are made up of swirling gases. – Jupiter’s atmosphere is very colorful and it has an are called the Great Red Spot. • This spot is a storm that has been raging from hundreds of years and is ...
Lecture 13. Black Holes - Politechnika Wrocławska
... • This is what we call a black hole. • The star becomes very small. – it creates a “hole” in the Universe – That not even light could escape ...
... • This is what we call a black hole. • The star becomes very small. – it creates a “hole” in the Universe – That not even light could escape ...
Navigating by the Stars
... This is now called Kepler's First Law or The Law of Ellipses. What is an ellipse? Glad you asked. An ellipse is a closed, curved shape that is defined by two foci. An ellipse is a like a flattened circle. In fact, if both of the foci of an ellipse are at the same point, an ellipse becomes a circle! ...
... This is now called Kepler's First Law or The Law of Ellipses. What is an ellipse? Glad you asked. An ellipse is a closed, curved shape that is defined by two foci. An ellipse is a like a flattened circle. In fact, if both of the foci of an ellipse are at the same point, an ellipse becomes a circle! ...
lecture5 - UMass Astronomy
... Earth. You can now imagine how Earth, the moon, and the sun move through space and how that produces the sights you see in the sky. But how did humanity first realize that we live on a planet moving through space? That required revolutionary overthrow of an ancient and honored theory of Earth’s plac ...
... Earth. You can now imagine how Earth, the moon, and the sun move through space and how that produces the sights you see in the sky. But how did humanity first realize that we live on a planet moving through space? That required revolutionary overthrow of an ancient and honored theory of Earth’s plac ...
Lecture 7: The Sun - Department of Physics and Astronomy
... They can be tested, and disproven, but they can’t be tested in every in instance. A theory cannot be proven like a mathematical theorem. A theory may turn out to be a useful approximation, example: Newton’s laws are an approximation: they are superseded by Einstein’s theory of relativity on large ...
... They can be tested, and disproven, but they can’t be tested in every in instance. A theory cannot be proven like a mathematical theorem. A theory may turn out to be a useful approximation, example: Newton’s laws are an approximation: they are superseded by Einstein’s theory of relativity on large ...
Stars: Element factories.
... more atoms having the same atomic number but different mass numbers. ...
... more atoms having the same atomic number but different mass numbers. ...
Grade 7 Science
... Constellations in the sky. The 12 constellations make up a ―belt‖ in the sky called the zodiac. Each month, the sun appears to be in a different constellation. The ancient Babylonians developed a 12month calendar based on the idea that the sun moved through this circle of constellations as it revolv ...
... Constellations in the sky. The 12 constellations make up a ―belt‖ in the sky called the zodiac. Each month, the sun appears to be in a different constellation. The ancient Babylonians developed a 12month calendar based on the idea that the sun moved through this circle of constellations as it revolv ...
Chapter 08
... is highly opaque to radiation. But neutrinos can penetrate huge amounts of material without being absorbed. Early solar neutrino experiments detected a much lower flux of neutrinos than expected (the “solar neutrino problem”). Recent results have proven that neutrinos change (“oscillate”) between di ...
... is highly opaque to radiation. But neutrinos can penetrate huge amounts of material without being absorbed. Early solar neutrino experiments detected a much lower flux of neutrinos than expected (the “solar neutrino problem”). Recent results have proven that neutrinos change (“oscillate”) between di ...
