Introduction to the sky
... in the west. The ancient Greeks attributed this to Apollo driving his chariot across the sky. The Sun appears to complete a whole circle (360 degrees) around the Earth every 24 hours. Thus, its apparent motion is 15 degrees per hour from east to west. This apparent motion is due to the rotation of t ...
... in the west. The ancient Greeks attributed this to Apollo driving his chariot across the sky. The Sun appears to complete a whole circle (360 degrees) around the Earth every 24 hours. Thus, its apparent motion is 15 degrees per hour from east to west. This apparent motion is due to the rotation of t ...
DR 19.2 - Cobb Learning
... ______ 21. stars with low mass, low temperature, and low absolute magnitude ______ 22. small hot stars that are dimmer than the sun ______ 23. high-temperature stars that quickly use up their hydrogen ______ 24. cool stars with absolute magnitude ______ 25. stars in the band that runs along the midd ...
... ______ 21. stars with low mass, low temperature, and low absolute magnitude ______ 22. small hot stars that are dimmer than the sun ______ 23. high-temperature stars that quickly use up their hydrogen ______ 24. cool stars with absolute magnitude ______ 25. stars in the band that runs along the midd ...
constellations are not real!
... The apparent groupings of stars into constellations that we see on the celestial sphere are not physical groupings. In most cases the stars in constellations and asterisms are each very different distances from us, and only appear to be grouped because they lie in approximately the same direction. ...
... The apparent groupings of stars into constellations that we see on the celestial sphere are not physical groupings. In most cases the stars in constellations and asterisms are each very different distances from us, and only appear to be grouped because they lie in approximately the same direction. ...
Questions for this book (Word format)
... Copying directly from the book is illegal (plagiarism) and will be penalised. 1. When Eddington suggested in 1926 that stars were powered by hydrogen fusion, why did most physicists quite reasonably reject this suggestion? Explain the phenomenon, unknown in 1926, that allows hydrogen fusion to occur ...
... Copying directly from the book is illegal (plagiarism) and will be penalised. 1. When Eddington suggested in 1926 that stars were powered by hydrogen fusion, why did most physicists quite reasonably reject this suggestion? Explain the phenomenon, unknown in 1926, that allows hydrogen fusion to occur ...
Star in a Box Worksheet - Beginning
... radius of the Sun and its temperature is about 8000 K. Betelgeuse has 1000 times the radius of the Sun and its temperature is about 3500 K. Select a star with 20x the mass of the Sun and run the animation, use this to find: 1. What stages of their lives the two stars are in. 2. How long each star ha ...
... radius of the Sun and its temperature is about 8000 K. Betelgeuse has 1000 times the radius of the Sun and its temperature is about 3500 K. Select a star with 20x the mass of the Sun and run the animation, use this to find: 1. What stages of their lives the two stars are in. 2. How long each star ha ...
Stars on the HR Diagram
... data derived from the light (radiation) from stars. The Hertzsprung-Russell (HR) Diagram, widely used in astronomy, is a scatter plot with a distribution of data points that describe a relationship between physical aspects of stars. The HR Diagram became the key to understanding the life cycles of s ...
... data derived from the light (radiation) from stars. The Hertzsprung-Russell (HR) Diagram, widely used in astronomy, is a scatter plot with a distribution of data points that describe a relationship between physical aspects of stars. The HR Diagram became the key to understanding the life cycles of s ...
Star Questions 2008 - Fort Thomas Independent Schools
... accumulates more matter than it had when it was on the main sequence, causing the core to grow to a size greater than 1.4 solar masses. ...
... accumulates more matter than it had when it was on the main sequence, causing the core to grow to a size greater than 1.4 solar masses. ...
Summary: Stellar Distances
... If we know the luminosity, L, and the temperature T, of a star we can determine its radius R. Some stars of a given spectral type are much more luminous (hence larger) than main sequence stars of the same type. These are supergiants and giants (classes I - IV) Some stars of a given spectral type are ...
... If we know the luminosity, L, and the temperature T, of a star we can determine its radius R. Some stars of a given spectral type are much more luminous (hence larger) than main sequence stars of the same type. These are supergiants and giants (classes I - IV) Some stars of a given spectral type are ...
Antares - Emmi
... Antares is 3500 degrees Kelvin Compared to the suns 5700 degrees Kelvin.( Kelvin is unit used to measure incredibly hot objects or stars Kelvin is 272 degrees Celsius) Even though Antares is much colder it is brighter because it is much larger ...
... Antares is 3500 degrees Kelvin Compared to the suns 5700 degrees Kelvin.( Kelvin is unit used to measure incredibly hot objects or stars Kelvin is 272 degrees Celsius) Even though Antares is much colder it is brighter because it is much larger ...
the lives of stars
... star, has been a main sequence star for about 5 billion years. It will continue to shine without changing for about 5 billion more years. Really large stars burn through their supply of hydrogen very quickly, so they ‘live fast and die young’! These very large stars may only be on the main sequence ...
... star, has been a main sequence star for about 5 billion years. It will continue to shine without changing for about 5 billion more years. Really large stars burn through their supply of hydrogen very quickly, so they ‘live fast and die young’! These very large stars may only be on the main sequence ...
Astronomy and Space articles
... The Brightest Star in the Night Sky Since writing recently about the first star to become visible in the evenings, which at this time of the year is Sirius, I have had a few questions about that star, and why it is so bright. Sirius is a brilliant star, visible high in our northern evening sky. It i ...
... The Brightest Star in the Night Sky Since writing recently about the first star to become visible in the evenings, which at this time of the year is Sirius, I have had a few questions about that star, and why it is so bright. Sirius is a brilliant star, visible high in our northern evening sky. It i ...
Star Life Cycle - GSHS Mrs. Francomb
... Pumbaa: Oh. Gee. I always thought that they were balls of gas burning billions of miles away. Timon: Pumbaa, wit' you, everything's gas. ...
... Pumbaa: Oh. Gee. I always thought that they were balls of gas burning billions of miles away. Timon: Pumbaa, wit' you, everything's gas. ...
Aspire: Star Life Cycle - Easy Peasy All-in
... 21. Where would you expect to find other main sequence stars of the same size on this diagram? (2 Points) 22. Which description of the relationship is correct? (2 Points) 23. Write down the hypothesis that is correct. (2 Points) 24. Determine if the following are true or false. (6 Points) a. Differe ...
... 21. Where would you expect to find other main sequence stars of the same size on this diagram? (2 Points) 22. Which description of the relationship is correct? (2 Points) 23. Write down the hypothesis that is correct. (2 Points) 24. Determine if the following are true or false. (6 Points) a. Differe ...
IB Precalculus
... 4. Suppose your cell phone rings with a noise of 74 decibels, and you normally speak at 61 decibels. (a) What is the ratio of the sound intensity of your cell phone ring to the sound intensity of your normal speech? (b) How many times louder does your cell phone ring seem than your normal speech? 5. ...
... 4. Suppose your cell phone rings with a noise of 74 decibels, and you normally speak at 61 decibels. (a) What is the ratio of the sound intensity of your cell phone ring to the sound intensity of your normal speech? (b) How many times louder does your cell phone ring seem than your normal speech? 5. ...
Milky Way
... Disk • The band of the Milky Way is the same view a viewer would have sitting inside a disk of stars. – Consistent with the Sun towards an edge ...
... Disk • The band of the Milky Way is the same view a viewer would have sitting inside a disk of stars. – Consistent with the Sun towards an edge ...
Cassiopeia (constellation)
Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty. Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today. It is easily recognizable due to its distinctive 'M' shape when in upper culmination but in higher northern locations when near lower culminations in spring and summer it has a 'W' shape, formed by five bright stars. It is bordered by Andromeda to the south, Perseus to the southeast, and Cepheus to the north. It is opposite the Big Dipper.In northern locations above 34ºN latitude it is visible year-round and in the (sub)tropics it can be seen at its clearest from September to early November in its characteristic 'M' shape. Even in low southern latitudes below 25ºS is can be seen low in the North.