The Moon and the Sun: 2003 version
... When it is getting smaller, the Moon is waning. When the Moon is more than half-lit, it is called a gibbous Moon. When the moon is less than half-lit, it is called a crescent Moon. ...
... When it is getting smaller, the Moon is waning. When the Moon is more than half-lit, it is called a gibbous Moon. When the moon is less than half-lit, it is called a crescent Moon. ...
Blue Marble in Empty Space
... diameter fits more than 100 times in the Sun’s, and more than 100 Suns fit in the distance Earth-Sun.) Astronomers call this distance an astronomical unit. In the distance to our neighbouring planets Venus and Mars fit respectively 3,300 and 6,100 Earths. And that is when the planets are closest to ...
... diameter fits more than 100 times in the Sun’s, and more than 100 Suns fit in the distance Earth-Sun.) Astronomers call this distance an astronomical unit. In the distance to our neighbouring planets Venus and Mars fit respectively 3,300 and 6,100 Earths. And that is when the planets are closest to ...
Astronomy Review
... Large ball of glowing gases Extremely hot Doesn’t have a rocky surface Atmosphere glows and gives off light Located at the center of the solar system Earth and other planets revolve around it ...
... Large ball of glowing gases Extremely hot Doesn’t have a rocky surface Atmosphere glows and gives off light Located at the center of the solar system Earth and other planets revolve around it ...
Worksheet 1
... disk of gas and dust G. A planet orbiting in the inner part of the Solar System H. A planet not orbiting our Sun I. The Sun, planets, their moons, and other bodies that orbit the Sun J. A cloud of gas and dust in between the stars K. One of the giant, gaseous planets: Jupiter, Saturn, Uranus, Neptun ...
... disk of gas and dust G. A planet orbiting in the inner part of the Solar System H. A planet not orbiting our Sun I. The Sun, planets, their moons, and other bodies that orbit the Sun J. A cloud of gas and dust in between the stars K. One of the giant, gaseous planets: Jupiter, Saturn, Uranus, Neptun ...
Astronomy Unit BM study guide
... light from the nearest large galaxy, Andromeda, was emitted 2.5 million years ago. Therefore, the images we see of these objects are how they looked at the time in the past when their light left them. The further away an object is, the older the light is that we are receiving from it. The shapes of ...
... light from the nearest large galaxy, Andromeda, was emitted 2.5 million years ago. Therefore, the images we see of these objects are how they looked at the time in the past when their light left them. The further away an object is, the older the light is that we are receiving from it. The shapes of ...
Introduction to Basic Stargazing Part II - Naples Free-Net
... outside of twilight. Venus can be moderately high in the sky, but is never seen in the middle of the night and most often is seen shining just above the eastern or western horizon. Outer planets may be seen any time of the night depending on their exact position. An outer planet is brightest when it ...
... outside of twilight. Venus can be moderately high in the sky, but is never seen in the middle of the night and most often is seen shining just above the eastern or western horizon. Outer planets may be seen any time of the night depending on their exact position. An outer planet is brightest when it ...
Astronomy DR Packet
... 11. A full lunar cycle (from one new moon phase to the next) takes _______ days. 12. What lunar phase will you see 7.4 days after the new moon? ____________________ 13. What lunar phase will you see in another 7.4 days? ____________________ 14. What lunar phase will you see in another 7.4 days? ____ ...
... 11. A full lunar cycle (from one new moon phase to the next) takes _______ days. 12. What lunar phase will you see 7.4 days after the new moon? ____________________ 13. What lunar phase will you see in another 7.4 days? ____________________ 14. What lunar phase will you see in another 7.4 days? ____ ...
37) What is the largest planet in the solar system?
... A) Mars, Mercury, Venus, Earth, Jupiter, Saturn, Uranus, Neptune B) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Neptune, Uranus C) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune D) Mars, Venus, Earth, Mercury, Saturn, Jupiter, Uranus, Neptune E) Venus, Mercury, Earth, Mars, Saturn, ...
... A) Mars, Mercury, Venus, Earth, Jupiter, Saturn, Uranus, Neptune B) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Neptune, Uranus C) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune D) Mars, Venus, Earth, Mercury, Saturn, Jupiter, Uranus, Neptune E) Venus, Mercury, Earth, Mars, Saturn, ...
Comparing the Chemical Compositions of the Sun and Earth
... within about 4 AU (the snowline) and a more refractory solid beyond 4 AU. Similar consideration of the ices NH3 and CH4 explain why H, C and N are only partially depleted. Fe, Mg Ni,Ca, Al, Cr, Ti, V, Sr and Zr are refractory elements and have relative abundances that have not changed since the Eart ...
... within about 4 AU (the snowline) and a more refractory solid beyond 4 AU. Similar consideration of the ices NH3 and CH4 explain why H, C and N are only partially depleted. Fe, Mg Ni,Ca, Al, Cr, Ti, V, Sr and Zr are refractory elements and have relative abundances that have not changed since the Eart ...
If you wish to a copy of this months Night Sky News
... Mars is very poorly placed over the other side of the Solar System, low in the south-west at sunset, and follows the Sun down like this for the next two months or so; conjunction is on the 14th June. Jupiter is by far the most convenient planet to observe this month and can be observed all night thr ...
... Mars is very poorly placed over the other side of the Solar System, low in the south-west at sunset, and follows the Sun down like this for the next two months or so; conjunction is on the 14th June. Jupiter is by far the most convenient planet to observe this month and can be observed all night thr ...
Chapter 8 Universal Gravitation
... – Example: Drive up a hill with that ice at a constant rate (no acceleration), yet the block slides, due to gravitational mass. ...
... – Example: Drive up a hill with that ice at a constant rate (no acceleration), yet the block slides, due to gravitational mass. ...
here
... 6. Galileo was one of the first to systematically try to measure the speed of light. His attempt involved two observers positioned in two towers that were about 10km apart. The idea was that the first observer opens a shutter in a lantern and then as soon as the second observer sees the light from t ...
... 6. Galileo was one of the first to systematically try to measure the speed of light. His attempt involved two observers positioned in two towers that were about 10km apart. The idea was that the first observer opens a shutter in a lantern and then as soon as the second observer sees the light from t ...
Astro 001 Spring 2002
... B. To account for phases of the Moon. C. To accurately predict the position of a planet. D. [Both A and B above.] E. [All of the above.] (24) The Sun appears to move among the stars. The Copernican model accounts for this as being due to A. the Earth’s rotation on its axis. B. the Earth’s revolution ...
... B. To account for phases of the Moon. C. To accurately predict the position of a planet. D. [Both A and B above.] E. [All of the above.] (24) The Sun appears to move among the stars. The Copernican model accounts for this as being due to A. the Earth’s rotation on its axis. B. the Earth’s revolution ...
Previously on Astro-1
... The angle α must be in arcseconds. The distances can be in any unit, as long as they are the same. Example: What is the linear diameter of the moon if it is half a degree wide, and 400,000 km away? ...
... The angle α must be in arcseconds. The distances can be in any unit, as long as they are the same. Example: What is the linear diameter of the moon if it is half a degree wide, and 400,000 km away? ...
Review
... 29) Which of the following observations does not support the solar nebula theory? A) The four inner planets have few or no moons B) The gas planets are farther from the Sun than the four inner planets C) All the planets orbit in the same direction D) The orbits of Pluto and the other distant dwarf ...
... 29) Which of the following observations does not support the solar nebula theory? A) The four inner planets have few or no moons B) The gas planets are farther from the Sun than the four inner planets C) All the planets orbit in the same direction D) The orbits of Pluto and the other distant dwarf ...
Astronomy 1 – Winter 2011
... The angle α must be in arcseconds. The distances can be in any unit, as long as they are the same. Example: What is the linear diameter of the moon if it is half a degree wide, and 400,000 km away? ...
... The angle α must be in arcseconds. The distances can be in any unit, as long as they are the same. Example: What is the linear diameter of the moon if it is half a degree wide, and 400,000 km away? ...
Star Study Guide Chapter 21 Test
... Measuring distances to stars How to Measure PARALLAX: the ...
... Measuring distances to stars How to Measure PARALLAX: the ...
12 Celestial Bodies in our Solar System
... worlds left over from the early solar system. Collisions frequently occur between the rocky leftovers. Occasionally, Jupiter’s gravity nudges an asteroid out of its orbit and sends it towards the S ...
... worlds left over from the early solar system. Collisions frequently occur between the rocky leftovers. Occasionally, Jupiter’s gravity nudges an asteroid out of its orbit and sends it towards the S ...
Size Color and Temperature
... solar system well beyond Earth’s orbit. Because giant and supergiant stars have such huge surface areas to give off light, they are very bright. Betelgeuse is one of the brightest stars in the sky, even though it is 522 light-years away. There are also stars much smaller than the Sun. Stars called w ...
... solar system well beyond Earth’s orbit. Because giant and supergiant stars have such huge surface areas to give off light, they are very bright. Betelgeuse is one of the brightest stars in the sky, even though it is 522 light-years away. There are also stars much smaller than the Sun. Stars called w ...
Jun - Wadhurst Astronomical Society
... Dividing the results by 10 gives the distance in Astronomical Units AUs (1 AU is the distance from the Earth to the Sun), Following the results we find a sequence of distances that fairly accurately coincide with the distance of the orbits of the planets. ...
... Dividing the results by 10 gives the distance in Astronomical Units AUs (1 AU is the distance from the Earth to the Sun), Following the results we find a sequence of distances that fairly accurately coincide with the distance of the orbits of the planets. ...
What causes eclipses?
... parallax could mean one of two things: 1. Stars are so far away that stellar parallax is too small to notice with the naked eye. 2. Earth does not orbit the Sun; it is the center of the universe. With rare exceptions such as Aristarchus, the Greeks rejected the correct explanation (1) because they ...
... parallax could mean one of two things: 1. Stars are so far away that stellar parallax is too small to notice with the naked eye. 2. Earth does not orbit the Sun; it is the center of the universe. With rare exceptions such as Aristarchus, the Greeks rejected the correct explanation (1) because they ...
Exploring the Moon and Stars
... orientation of the Earth to the Sun shifts. • On the northern summer solstice, regions north of the equator have the greatest number of daylight hours of the year. • On the northern winter solstice, regions north of the equator have the fewest number of daylight hours of the year. • On the days of t ...
... orientation of the Earth to the Sun shifts. • On the northern summer solstice, regions north of the equator have the greatest number of daylight hours of the year. • On the northern winter solstice, regions north of the equator have the fewest number of daylight hours of the year. • On the days of t ...
Star and Sun Properties
... • The Sun, our closest star, is 93 million miles from Earth. • The next closest star is 4.3 lighter years away. • By mass, the Sun is 71 % Hydrogen, 27% helium and the rest heavier element. This is similar to the composition of the universe. • The Sun is about 4.6 billion years old. ...
... • The Sun, our closest star, is 93 million miles from Earth. • The next closest star is 4.3 lighter years away. • By mass, the Sun is 71 % Hydrogen, 27% helium and the rest heavier element. This is similar to the composition of the universe. • The Sun is about 4.6 billion years old. ...
Vocabulary – Our Solar System
... Pluto used to be considered the ninth planet from the Sun. Studies starting in 1977 found several other icy objects similar to Pluto in our solar system, so Pluto was eventually excluded and was reclassified as a dwarf planet in 2006. ...
... Pluto used to be considered the ninth planet from the Sun. Studies starting in 1977 found several other icy objects similar to Pluto in our solar system, so Pluto was eventually excluded and was reclassified as a dwarf planet in 2006. ...
PARTS OF THE UNIVERSE
... v Stars are objects made of gases which produce light and heat from fusion reactions inside the star. v Smaller stars fuse hydrogen into helium. Larger stars form heavier elements. v Stars begin & end their life in nebulae. ...
... v Stars are objects made of gases which produce light and heat from fusion reactions inside the star. v Smaller stars fuse hydrogen into helium. Larger stars form heavier elements. v Stars begin & end their life in nebulae. ...
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.