2016 Spring, VAS Newsletter
... When you think about the new stars forming in the Milky Way, you probably think of the giant star-forming regions like the Orion Nebula, containing thousands of new stars with light so bright it's visible to the naked eye. At over 400 parsecs (1,300 light years) distant, it's one of the most spectac ...
... When you think about the new stars forming in the Milky Way, you probably think of the giant star-forming regions like the Orion Nebula, containing thousands of new stars with light so bright it's visible to the naked eye. At over 400 parsecs (1,300 light years) distant, it's one of the most spectac ...
The Sun: Source of heat and light
... orange at first, then becomes more yellow or white in colour as it warms up. Scientists say that it emits like a “black body”. To a good approximation, stars also emit like a “black body”. ...
... orange at first, then becomes more yellow or white in colour as it warms up. Scientists say that it emits like a “black body”. To a good approximation, stars also emit like a “black body”. ...
Chapter 7 Mapping the Sky
... and the object and call this the object’s hour circle. Where the sun in its path crosses the celestial equator each year around March 21 is called the vernal equinox, and it is this line that is the reference for the east-west coordinate of the object. Because Earth’s axis is inclined 23.5˚ to the p ...
... and the object and call this the object’s hour circle. Where the sun in its path crosses the celestial equator each year around March 21 is called the vernal equinox, and it is this line that is the reference for the east-west coordinate of the object. Because Earth’s axis is inclined 23.5˚ to the p ...
Earth Science 24.3 The Sun
... What are those dark areas Galileo observed? The dark regions of the photosphere that we observe are called sunspots. An individual sunspot contains a black region ringed by a lighter region. Sunspots appear dark because of their temperature, which is about 1500 K less than that of the surrounding so ...
... What are those dark areas Galileo observed? The dark regions of the photosphere that we observe are called sunspots. An individual sunspot contains a black region ringed by a lighter region. Sunspots appear dark because of their temperature, which is about 1500 K less than that of the surrounding so ...
Small images
... mid November evening facing due west and covers just over 180 degrees along the horizon. So, the South Celestial Pole is at the center of the concentric arcs on the left and the North Celestial Pole is at the far right. The stars setting along the Celestial Equator leave the straight trails near the ...
... mid November evening facing due west and covers just over 180 degrees along the horizon. So, the South Celestial Pole is at the center of the concentric arcs on the left and the North Celestial Pole is at the far right. The stars setting along the Celestial Equator leave the straight trails near the ...
Earth in Space - Learning Outcomes
... During trial firing of Pioneer Moon rockets, one rocket reached an altitude of 125 000 km. Neglecting the effect of the Moon, estimate the velocity with which this rocket struck the atmosphere of the Earth on its return. (Assume that the rocket‟s path is entirely radial and that the atmosphere exten ...
... During trial firing of Pioneer Moon rockets, one rocket reached an altitude of 125 000 km. Neglecting the effect of the Moon, estimate the velocity with which this rocket struck the atmosphere of the Earth on its return. (Assume that the rocket‟s path is entirely radial and that the atmosphere exten ...
Astronomy
... planets revolved around Earth each day. This seems reasonable, since we do not feel Earth moving, and the sun does appear to move across the sky during the day while the moon and stars appear to move at night. However, today we know that these apparent motions of the sun, moon, and stars are actuall ...
... planets revolved around Earth each day. This seems reasonable, since we do not feel Earth moving, and the sun does appear to move across the sky during the day while the moon and stars appear to move at night. However, today we know that these apparent motions of the sun, moon, and stars are actuall ...
005 Astrophysics problems
... During trial firing of Pioneer Moon rockets, one rocket reached an altitude of 125 000 km. Neglecting the effect of the Moon, estimate the velocity with which this rocket struck the atmosphere of the Earth on its return. (Assume that the rocket’s path is entirely radial and that the atmosphere exten ...
... During trial firing of Pioneer Moon rockets, one rocket reached an altitude of 125 000 km. Neglecting the effect of the Moon, estimate the velocity with which this rocket struck the atmosphere of the Earth on its return. (Assume that the rocket’s path is entirely radial and that the atmosphere exten ...
3 sr -1
... The magnitude scale system can be extended towards negative numbers (very bright) and numbers > 6 (faint objects): Sirius (brightest star in the sky): mv = -1.42 Full moon: mv = -12.5 Sun: mv = -26.5 ...
... The magnitude scale system can be extended towards negative numbers (very bright) and numbers > 6 (faint objects): Sirius (brightest star in the sky): mv = -1.42 Full moon: mv = -12.5 Sun: mv = -26.5 ...
naap_motion1_sg
... Dragging the stick figure allows one to very conveniently change latitude. Dragging the stick figure on top of the subsolar point effectively puts the observer at the latitude where the direct rays of the sun are hitting. ...
... Dragging the stick figure allows one to very conveniently change latitude. Dragging the stick figure on top of the subsolar point effectively puts the observer at the latitude where the direct rays of the sun are hitting. ...
Revision sheet - Nour Al Maaref International School
... ____ 43. Copernicus challenged the way in which people of his time thought about the solar system. How did Copernicus describe the motion of the sun? A. The sun is stationary. B. The sun revolves around Earth. C. The sun moves in an elliptical orbit. D. The sun moves in a straight line through space ...
... ____ 43. Copernicus challenged the way in which people of his time thought about the solar system. How did Copernicus describe the motion of the sun? A. The sun is stationary. B. The sun revolves around Earth. C. The sun moves in an elliptical orbit. D. The sun moves in a straight line through space ...
From last time Gravitational force Equal accelerations A fortunate
... • The diameter of the moon is the diameter of its shadow during a solar eclipse. From the diameter d and angular size d/r~5 deg, infer distance r~60*r(earth). ...
... • The diameter of the moon is the diameter of its shadow during a solar eclipse. From the diameter d and angular size d/r~5 deg, infer distance r~60*r(earth). ...
Document
... b. 10 miles high and wide. 10. How much more would you weigh on a neutron star than on Earth? d. 5,000,000,000 11. How long would it take a passenger jet to circle fully VY Canis Majoris once? b. 1,200 years 12. If the Earth were the size of a basketball and the moon the size of a tennis ball, how f ...
... b. 10 miles high and wide. 10. How much more would you weigh on a neutron star than on Earth? d. 5,000,000,000 11. How long would it take a passenger jet to circle fully VY Canis Majoris once? b. 1,200 years 12. If the Earth were the size of a basketball and the moon the size of a tennis ball, how f ...
The Sun Video Focus Questions
... _____________ glow. This is known as the _______________ phase. Finally, the sun will cool into a dark__________. 15. Nuclear fusion takes place in the ______________ of the Sun. 16. This area is about ______________ degrees Celsius or _____________ degrees Fahrenheit. 17. The only area of the Sun ...
... _____________ glow. This is known as the _______________ phase. Finally, the sun will cool into a dark__________. 15. Nuclear fusion takes place in the ______________ of the Sun. 16. This area is about ______________ degrees Celsius or _____________ degrees Fahrenheit. 17. The only area of the Sun ...
Lecture 10
... • The effects are quite noticeable, almost an arcminute a year along the ecliptic. • When you give the coordinates of an object you also must specify the year that corresponds to those coordinates (because they will be significantly different in future years). • This specified year for the coordinat ...
... • The effects are quite noticeable, almost an arcminute a year along the ecliptic. • When you give the coordinates of an object you also must specify the year that corresponds to those coordinates (because they will be significantly different in future years). • This specified year for the coordinat ...
The Sun and the Stars
... Apparent magnitude : The apparent magnitude (symbol m) is a measure of the stars brightness as seen by an observer on Earth. Scale originally devised by Hipparchus and later Ptolemy. Historically , stars were divided into 6 categories according to their brightness : brightest 1st magnitude, faintest ...
... Apparent magnitude : The apparent magnitude (symbol m) is a measure of the stars brightness as seen by an observer on Earth. Scale originally devised by Hipparchus and later Ptolemy. Historically , stars were divided into 6 categories according to their brightness : brightest 1st magnitude, faintest ...
ziggynotes
... T it will appear to have moved an angle = VT/D (where is measured in radians. Strictly speaking is should be sin() = VT/D, but for small angles, sin() ~ tan() ~ : the small angle approximation). Using this equation (which is only basic geometry), you find that if these sources were as far aw ...
... T it will appear to have moved an angle = VT/D (where is measured in radians. Strictly speaking is should be sin() = VT/D, but for small angles, sin() ~ tan() ~ : the small angle approximation). Using this equation (which is only basic geometry), you find that if these sources were as far aw ...
Lecture 3
... Apparent magnitude : The apparent magnitude (symbol m) is a measure of the stars brightness as seen by an observer on Earth. Scale originally devised by Hipparchus and later Ptolemy. Historically , stars were divided into 6 categories according to their brightness : brightest 1st magnitude, faintest ...
... Apparent magnitude : The apparent magnitude (symbol m) is a measure of the stars brightness as seen by an observer on Earth. Scale originally devised by Hipparchus and later Ptolemy. Historically , stars were divided into 6 categories according to their brightness : brightest 1st magnitude, faintest ...
Solar System
... 2. In our solar system, our sun is always at one of the foci. 3. Line the goes through both foci and the ellipse is called the major axis. 4. The average distance of an orbiting body is equal to the semi-major axis. 5. For Earth-Sun this is 1.496 x 108 km = 1 AU (astronomical unit) ...
... 2. In our solar system, our sun is always at one of the foci. 3. Line the goes through both foci and the ellipse is called the major axis. 4. The average distance of an orbiting body is equal to the semi-major axis. 5. For Earth-Sun this is 1.496 x 108 km = 1 AU (astronomical unit) ...
The New Dwarf Planet and Plutoids
... approximately 1,960 km in diameter. It was discovered in 2004. Haumea has no rings, but it has 2 moons-Hi’iaka and Namaka. It has a 283 year orbit and is approximately 50 AU from the sun. Haumea also has an ultra fast spin and rotates every 3.9 hours. Haumea is elliptical or egg shaped. Some scienti ...
... approximately 1,960 km in diameter. It was discovered in 2004. Haumea has no rings, but it has 2 moons-Hi’iaka and Namaka. It has a 283 year orbit and is approximately 50 AU from the sun. Haumea also has an ultra fast spin and rotates every 3.9 hours. Haumea is elliptical or egg shaped. Some scienti ...
How the Earth Moves Transcript
... complex behaviour. Direct (or prograde) motion is when the planet moves the same way as the Sun and the Moon, eastwards across the stars. But sometimes they are seen to stop this relative motion and then reverse direction to move westwards in a retrograde motion for a short while, before resuming th ...
... complex behaviour. Direct (or prograde) motion is when the planet moves the same way as the Sun and the Moon, eastwards across the stars. But sometimes they are seen to stop this relative motion and then reverse direction to move westwards in a retrograde motion for a short while, before resuming th ...
Define the following terms in the space provided
... A) At what altitude would Polaris appear above the northern horizon? The altitude of Polaris (NCP, really) just equals your latitude. Thus, Polaris would appear +26 degrees above the northern horizon. B) Would a star with a declination of +63 degrees be circumpolar? Explain. Since Polaris (the NCP, ...
... A) At what altitude would Polaris appear above the northern horizon? The altitude of Polaris (NCP, really) just equals your latitude. Thus, Polaris would appear +26 degrees above the northern horizon. B) Would a star with a declination of +63 degrees be circumpolar? Explain. Since Polaris (the NCP, ...
Planetarium_Exercises - Illinois State University
... 7. Which season is just starting when the seem the midday sun at its lowest in the sky? 8. How many months does it take the midday sun to move from highest to lowest? 9. Does the midday sun ever appear directly overhead for observers at 40 degrees north latitude? If so, on what approximate date? 10. ...
... 7. Which season is just starting when the seem the midday sun at its lowest in the sky? 8. How many months does it take the midday sun to move from highest to lowest? 9. Does the midday sun ever appear directly overhead for observers at 40 degrees north latitude? If so, on what approximate date? 10. ...
1 The Solar System - e
... sky? There is evidence that man had shown an interest in knowing about them since ancient times. At present man can explore more than what is visible to the naked eye, as scientists have invented modern equipment to observe the sky. It has been discovered that there are eight planets, shapeless piec ...
... sky? There is evidence that man had shown an interest in knowing about them since ancient times. At present man can explore more than what is visible to the naked eye, as scientists have invented modern equipment to observe the sky. It has been discovered that there are eight planets, shapeless piec ...
Extraterrestrial skies
In astronomy, the term extraterrestrial sky refers to a view of outer space from the surface of a world other than Earth.The sky of the Moon has been directly observed or photographed by astronauts, while those of Titan, Mars, and Venus have been observed indirectly by space probes designed to land on the surface and transmit images back to Earth.Characteristics of extraterrestrial skies appear to vary substantially due to a number of factors. An extraterrestrial atmosphere, if present, has a large bearing on visible characteristics. The atmosphere's density and chemical composition can contribute to differences in colour, opacity (including haze) and the presence of clouds. Astronomical objects may also be visible and can include natural satellites, rings, star systems and nebulas and other planetary system bodies.For skies that have not been directly or indirectly observed, their appearance can be simulated based on known parameters such as the position of astronomical objects relative to the surface and atmospheric composition.