astronomy practice test ch 9
... ____ 11. A star whose parallax is 0.01 seconds of arc is at a distance of 1,000 pc. ____ 12. The absolute magnitude of a star is the apparent magnitude it would have if it were 10 pc from Earth. ____ 13. Lines in the spectra of supergiant stars are broader than the same spectral lines in main sequen ...
... ____ 11. A star whose parallax is 0.01 seconds of arc is at a distance of 1,000 pc. ____ 12. The absolute magnitude of a star is the apparent magnitude it would have if it were 10 pc from Earth. ____ 13. Lines in the spectra of supergiant stars are broader than the same spectral lines in main sequen ...
TRANSIT
... The software, called NEOimpactor, has been specifically developed for measuring the impact of 'small' asteroids under one kilometre in diameter, and early results indicate that the ten countries most at risk are China, Indonesia, India, Japan, the United States, the Philippines, Italy, the United Ki ...
... The software, called NEOimpactor, has been specifically developed for measuring the impact of 'small' asteroids under one kilometre in diameter, and early results indicate that the ten countries most at risk are China, Indonesia, India, Japan, the United States, the Philippines, Italy, the United Ki ...
Lecture 3
... Stars and Planets • Stars are “fixed” relative to each other. They produce their own light which is independent of Sun’s location. What stars you see in a given night changes through the year. And depends on latitude (North-South location) • Planets have complicated (but predictable) orbits when vie ...
... Stars and Planets • Stars are “fixed” relative to each other. They produce their own light which is independent of Sun’s location. What stars you see in a given night changes through the year. And depends on latitude (North-South location) • Planets have complicated (but predictable) orbits when vie ...
Name: Period: ______ Date: 1/16/07
... What is the nearest star to Earth? Our sun is the nearest star. It is about 150,000,000 km. away. The next closest star to Earth is Proxima Centauri. Proxima Centauri is 40 trillion (40,000,000,000,000) kilometers from Earth. Such a large number is difficult to understand and use in calculations. Fo ...
... What is the nearest star to Earth? Our sun is the nearest star. It is about 150,000,000 km. away. The next closest star to Earth is Proxima Centauri. Proxima Centauri is 40 trillion (40,000,000,000,000) kilometers from Earth. Such a large number is difficult to understand and use in calculations. Fo ...
The Milky Way - Houston Community College System
... difficult. To discover the properties of stars, astronomers have used their telescopes and spectrographs in clever ways to learn the secrets hidden in starlight. The result is a family portrait of the stars. In this chapter you will find answers to five important questions about stars: • How far awa ...
... difficult. To discover the properties of stars, astronomers have used their telescopes and spectrographs in clever ways to learn the secrets hidden in starlight. The result is a family portrait of the stars. In this chapter you will find answers to five important questions about stars: • How far awa ...
Stars
... Observed motions of the Sun can be described if either 1) The Sun goes around the Earth once per day, or 2) The Earth rotates about its axis. ...
... Observed motions of the Sun can be described if either 1) The Sun goes around the Earth once per day, or 2) The Earth rotates about its axis. ...
Celestial Sphere, Celestial equator, N
... are declination and right ascension (RA). The earth’s daily rotation makes the stars appear to rotate around us. Because we only see half the celestial sphere at any one place, this simple rotation of the stars looks more complicated and actually makes it appear that stars rise and set. The set of s ...
... are declination and right ascension (RA). The earth’s daily rotation makes the stars appear to rotate around us. Because we only see half the celestial sphere at any one place, this simple rotation of the stars looks more complicated and actually makes it appear that stars rise and set. The set of s ...
Comets, Meteors, and Meteoroids
... sky. A comet looks like a bright ball with a long shiny tail. A comet is a ball of frozen gas, dust, and water. On November 19, 2002, we passed through a famous comet dust stream. When we flew through this space dust, the meteors seemed to shoot out of a group of stars called “Leo the Lion.” This me ...
... sky. A comet looks like a bright ball with a long shiny tail. A comet is a ball of frozen gas, dust, and water. On November 19, 2002, we passed through a famous comet dust stream. When we flew through this space dust, the meteors seemed to shoot out of a group of stars called “Leo the Lion.” This me ...
Star Finder
... Find the Big Dipper Asterism and note the three stars of the handle (The middle star is shown as a double whose visibility was used by the ancient Egyptians as an “eye” exam for civil service). Image follow the arc of the handle away from the four stars of the cup portion of the Big Dipper. The arc ...
... Find the Big Dipper Asterism and note the three stars of the handle (The middle star is shown as a double whose visibility was used by the ancient Egyptians as an “eye” exam for civil service). Image follow the arc of the handle away from the four stars of the cup portion of the Big Dipper. The arc ...
Sirius Astronomer - Orange County Astronomers
... than originally estimated. Most were slightly larger, and ¼ of the stars were at least 35% larger. Since the sizes of the planets found are calculated by the % of starlight blocked, the planets are also somewhat larger than previously estimated. By implication, the number of Earth-size planets is so ...
... than originally estimated. Most were slightly larger, and ¼ of the stars were at least 35% larger. Since the sizes of the planets found are calculated by the % of starlight blocked, the planets are also somewhat larger than previously estimated. By implication, the number of Earth-size planets is so ...
00
... also gases often appear to stream from one star to the other. These gaseous streams can be detected in several ways. A few spectral lines, usually of hydrogen or helium, or both, show an increased intensity during certain phases of the period, indicating an uneven distribution of these gases about t ...
... also gases often appear to stream from one star to the other. These gaseous streams can be detected in several ways. A few spectral lines, usually of hydrogen or helium, or both, show an increased intensity during certain phases of the period, indicating an uneven distribution of these gases about t ...
Constellation ProjectConstellation Project(es)
... 10. Show story to teacher when complete. 11. If you selected a constellation that is not in the “Stories of the Constellation” research on the internet your constellations story. If you still can not fi ...
... 10. Show story to teacher when complete. 11. If you selected a constellation that is not in the “Stories of the Constellation” research on the internet your constellations story. If you still can not fi ...
Physics@Brock - Brock University
... (c) near the middle of the day. (d) near the middle of the night. 18. The new moon rises (a) at sunrise. (b) at sunset. (c) near the middle of the day. (d) near the middle of the night. 19. The first-quarter moon rises (a) at sunrise. (b) at sunset. (c) near the middle of the day. (d) near the middl ...
... (c) near the middle of the day. (d) near the middle of the night. 18. The new moon rises (a) at sunrise. (b) at sunset. (c) near the middle of the day. (d) near the middle of the night. 19. The first-quarter moon rises (a) at sunrise. (b) at sunset. (c) near the middle of the day. (d) near the middl ...
1b91: answers to problem sheet no 1
... First two were revolutionary because they showed that heavenly bodies were not pure or perfect – third must also show this to some extent. Last three supported revolutionary view that the Earth and the other planets must orbit the Sun. Marks – total 8 (1 for each discovery and 1 for showing why it w ...
... First two were revolutionary because they showed that heavenly bodies were not pure or perfect – third must also show this to some extent. Last three supported revolutionary view that the Earth and the other planets must orbit the Sun. Marks – total 8 (1 for each discovery and 1 for showing why it w ...
The Size and Structure of the Milky Way Galaxy
... The Size and Structure of the Milky Way Galaxy We live in a new class of ...
... The Size and Structure of the Milky Way Galaxy We live in a new class of ...
Picture - The Russell Elementary Science Experience
... 2. Above the photosphere is the sun’s atmosphere, the corona. 3. Sunspots are dark because they are cooler than the rest of the photosphere. 4. Solar flares are brief bursts of energy from the photosphere. 5. A fast-moving stream of particles that is thrown into space from the corona are called the ...
... 2. Above the photosphere is the sun’s atmosphere, the corona. 3. Sunspots are dark because they are cooler than the rest of the photosphere. 4. Solar flares are brief bursts of energy from the photosphere. 5. A fast-moving stream of particles that is thrown into space from the corona are called the ...
Talk
... the stellar parameters obtained from our decomposing/fitting technique differ from those obtained from other authors, our results agree in broad terms. - In about 1/3 of the WDMS studied, the SDSS spectra suggest that the secondaries have Sp types too early for their masses. This behaviour could be ...
... the stellar parameters obtained from our decomposing/fitting technique differ from those obtained from other authors, our results agree in broad terms. - In about 1/3 of the WDMS studied, the SDSS spectra suggest that the secondaries have Sp types too early for their masses. This behaviour could be ...
Earth Rotation and Revolution
... are visible at night only during certain seasons. • Constellations are visible when the dark side of Earth (away from sun) faces toward the constellation. ...
... are visible at night only during certain seasons. • Constellations are visible when the dark side of Earth (away from sun) faces toward the constellation. ...
Guided notes part 1 - Duplin County Schools
... Each rotation equals about ___________________________________ We can _______________________________ Earth’s rotation in two ways, making two kinds of days Most familiar is the ________________________________________________, the time interval from one noon to the next, which averages about ______ ...
... Each rotation equals about ___________________________________ We can _______________________________ Earth’s rotation in two ways, making two kinds of days Most familiar is the ________________________________________________, the time interval from one noon to the next, which averages about ______ ...
Aquarius (constellation)
Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces. Its name is Latin for ""water-carrier"" or ""cup-carrier"", and its symbol is 20px (Unicode ♒), a representation of water.Aquarius is one of the oldest of the recognized constellations along the zodiac (the sun's apparent path). It was one of the 48 constellations listed by the 2nd century AD astronomer Ptolemy, and it remains one of the 88 modern constellations. It is found in a region often called the Sea due to its profusion of constellations with watery associations such as Cetus the whale, Pisces the fish, and Eridanus the river.