Motions of the Celestial Sphere
... Our view of Celestial Sphere • We live on the side of the Earth. • Sky appears tilted at an angle equal to our latitude. • Stars appear to move in arcs across the sky that are not perpendicular to horizon. ...
... Our view of Celestial Sphere • We live on the side of the Earth. • Sky appears tilted at an angle equal to our latitude. • Stars appear to move in arcs across the sky that are not perpendicular to horizon. ...
Solutions
... You have two hours to complete this exam. There are a total of six problems and you are to solve all of them. Not all the problems are worth the same number of points. You may use Introductory Astronomy and Astrophysics (Zeilik & Gregory), Astronomy: The Evoloving Universe ( Zeilik), and class notes ...
... You have two hours to complete this exam. There are a total of six problems and you are to solve all of them. Not all the problems are worth the same number of points. You may use Introductory Astronomy and Astrophysics (Zeilik & Gregory), Astronomy: The Evoloving Universe ( Zeilik), and class notes ...
stars - allenscience
... massive explosion called a Supernova. The end result is also a planetary nebula. Supernova are so bright that they can outshine an entire galaxy for a period of time. ...
... massive explosion called a Supernova. The end result is also a planetary nebula. Supernova are so bright that they can outshine an entire galaxy for a period of time. ...
LEO - nina`s Senior project
... orbital period of 500 years. A planet was discovered in the orbit of the primary star in November 2009.The Gamma Leonis system has a combined apparent visual magnitude of 1.98 and is approximately 130 light years distant from the Sun. It is easy to observe in a small telescope under good conditions ...
... orbital period of 500 years. A planet was discovered in the orbit of the primary star in November 2009.The Gamma Leonis system has a combined apparent visual magnitude of 1.98 and is approximately 130 light years distant from the Sun. It is easy to observe in a small telescope under good conditions ...
Lecture4
... The HR (Hertzsprung-Russell) Diagram (1913) Notice that a 100 solar mass star is about a million times brighter than the Sun. It has 100 times more fuel but uses it up a million times faster. It therefore lives only about 10-4 times as long as the Sun. Since the Sun lives 10 billion years, a 100 so ...
... The HR (Hertzsprung-Russell) Diagram (1913) Notice that a 100 solar mass star is about a million times brighter than the Sun. It has 100 times more fuel but uses it up a million times faster. It therefore lives only about 10-4 times as long as the Sun. Since the Sun lives 10 billion years, a 100 so ...
Forces in stars
... A medium sized star like our Sun is actually an enormous object. The Sun has a diameter of 1400 thousand km (over 100 times that of the Earth) and a mass of 2 million million million million million kg (about 300 000 times that of the Earth). This enormous mass means a very high gravitational pull – ...
... A medium sized star like our Sun is actually an enormous object. The Sun has a diameter of 1400 thousand km (over 100 times that of the Earth) and a mass of 2 million million million million million kg (about 300 000 times that of the Earth). This enormous mass means a very high gravitational pull – ...
Notes on Precession in Astronomy
... gyroscope, does when spun. This wobble is called the Earth's Precession. ...
... gyroscope, does when spun. This wobble is called the Earth's Precession. ...
HR Diagram Activity
... 4. Shade other color columns as follows: Stars up to 5,000°C are orange-red; up to 6,000°C yellow; 6000°C to 10,000°C are white (don’t shade); up to 20,000°C blue-white, and up to 40,000°C blue. 5. Look for patterns in your graph. Compare it to the H-R diagram supplied by your teacher. 6. Label the ...
... 4. Shade other color columns as follows: Stars up to 5,000°C are orange-red; up to 6,000°C yellow; 6000°C to 10,000°C are white (don’t shade); up to 20,000°C blue-white, and up to 40,000°C blue. 5. Look for patterns in your graph. Compare it to the H-R diagram supplied by your teacher. 6. Label the ...
a star is born reading
... burn fuel very quickly. It runs out in ten thousand to 100 thousand years. Even though they are very rare, many of the stars we see at night are blue giants. They burn brightly, and their light shines a very long distance. Blue giant stars die as a supernova. This is a spectacular explosion in space ...
... burn fuel very quickly. It runs out in ten thousand to 100 thousand years. Even though they are very rare, many of the stars we see at night are blue giants. They burn brightly, and their light shines a very long distance. Blue giant stars die as a supernova. This is a spectacular explosion in space ...
STARS
... Evolution Stars with a mass 1.5 times greater than the sun form into supergiants, then rapidly collapse forming a body much smaller than a white dwarf A high mass will form a neutron star An extremely high mass will have a density so high it creates an extreme gravity field, where nothing can escap ...
... Evolution Stars with a mass 1.5 times greater than the sun form into supergiants, then rapidly collapse forming a body much smaller than a white dwarf A high mass will form a neutron star An extremely high mass will have a density so high it creates an extreme gravity field, where nothing can escap ...
The Milky Way
... the stage for the drama to come. Now it is time to return to Earth and look closely at the sky and answer four essential questions: • How do astronomers refer to stars and compare their brightness? • How does the sky appear to move as Earth rotates? • What causes the seasons? • How can astronomical ...
... the stage for the drama to come. Now it is time to return to Earth and look closely at the sky and answer four essential questions: • How do astronomers refer to stars and compare their brightness? • How does the sky appear to move as Earth rotates? • What causes the seasons? • How can astronomical ...
Lives of stars
... 7. When the sun starts to die, the sun will start to expand. The sun will be larger, hence brighter, but it till be lower temperature. Which letter represents this state of the sun? What do call this type of star? 8. After the dieing process the sun starts, sun will be variable star for short period ...
... 7. When the sun starts to die, the sun will start to expand. The sun will be larger, hence brighter, but it till be lower temperature. Which letter represents this state of the sun? What do call this type of star? 8. After the dieing process the sun starts, sun will be variable star for short period ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.