ASTRONOMY 130
... found and used as a reference point. Ursa Major (the Big Dipper) serves as a good reference point for the north circumpolar constellations. Locate the Big Dipper. Begin with the star at the tip of the handle, this is Alkaid. Continue down the handle, the next star is Mizar. Look carefully at Mizar w ...
... found and used as a reference point. Ursa Major (the Big Dipper) serves as a good reference point for the north circumpolar constellations. Locate the Big Dipper. Begin with the star at the tip of the handle, this is Alkaid. Continue down the handle, the next star is Mizar. Look carefully at Mizar w ...
Supernovae, Neutron Stars, Black Holes
... was triggered by a supernova. Written by G. Jeffrey Taylor Hawai'i Institute of Geophysics and Planetology One of the most amazing discoveries in space science is the unambiguous evidence from meteorites that the solar nebula (the cloud of gas and dust in which the Sun and planets formed) contained ...
... was triggered by a supernova. Written by G. Jeffrey Taylor Hawai'i Institute of Geophysics and Planetology One of the most amazing discoveries in space science is the unambiguous evidence from meteorites that the solar nebula (the cloud of gas and dust in which the Sun and planets formed) contained ...
The Hertzsprung-Russell Diagram
... Why is there a “main sequence”? • Usually there is a predictable relationship between brightness and temp. Hotter things are brighter Hotter temp = more energy is radiated. Bigger stars are brighter. Bigger surface area = more energy radiated. ...
... Why is there a “main sequence”? • Usually there is a predictable relationship between brightness and temp. Hotter things are brighter Hotter temp = more energy is radiated. Bigger stars are brighter. Bigger surface area = more energy radiated. ...
1 Ay 124 Winter 2014 – HOMEWORK #2 Problem 1
... than 1M , whose lifetimes are shorter than the age of the galaxy. a) Find the slope x such that an observer in a homogeneous, isotropic region counts, at every apparent bolmetric magnitude, equal numbers of stars in each octave of luminosity. What type of star dominates the counts if x is flatter t ...
... than 1M , whose lifetimes are shorter than the age of the galaxy. a) Find the slope x such that an observer in a homogeneous, isotropic region counts, at every apparent bolmetric magnitude, equal numbers of stars in each octave of luminosity. What type of star dominates the counts if x is flatter t ...
Astronomy Unit Test – Chapter 21
... the length of day and night in the Northern and Southern Hemispheres at this time of year? Northern hemisphere: days are longer than nights and Southern hemisphere days are shorter than nights ...
... the length of day and night in the Northern and Southern Hemispheres at this time of year? Northern hemisphere: days are longer than nights and Southern hemisphere days are shorter than nights ...
Space Science Unit - World of Teaching
... the form of tables, while Russell presented his observations in table form in 1913. • Today the diagram is named for both men’s work in correlating a star’s brightness and surface temperature. ...
... the form of tables, while Russell presented his observations in table form in 1913. • Today the diagram is named for both men’s work in correlating a star’s brightness and surface temperature. ...
WK10revisedoneweek
... 1. Each planet moves in an ellipse, with the sun at one focus. 2. The line between the sun and the planet sweeps out equal areas in equal times. 3. The ratio of the cube of the average radius of a planets orbit to the square of its orbital period of revolution is the same for each planet. (Harmonic ...
... 1. Each planet moves in an ellipse, with the sun at one focus. 2. The line between the sun and the planet sweeps out equal areas in equal times. 3. The ratio of the cube of the average radius of a planets orbit to the square of its orbital period of revolution is the same for each planet. (Harmonic ...
Space Science Unit
... the form of tables, while Russell presented his observations in table form in 1913. • Today the diagram is named for both men’s work in correlating a star’s brightness and surface temperature. ...
... the form of tables, while Russell presented his observations in table form in 1913. • Today the diagram is named for both men’s work in correlating a star’s brightness and surface temperature. ...
The Danger of Deadly Cosmic Explosions
... • Big stars (10-100 sun mass), – Live fast (millions of years) ...
... • Big stars (10-100 sun mass), – Live fast (millions of years) ...
Constellation Part II readingConstellation Part II reading(es)
... Why Do Most Stars and Constellations Move? The stars are distant objects. Their distances vary, but they are all very far away. Excluding our Sun, the nearest star, Proxima Centauri, is more than 4 light years away. As Earth spins on its axis, we, as Earth-bound observers, spin past this background ...
... Why Do Most Stars and Constellations Move? The stars are distant objects. Their distances vary, but they are all very far away. Excluding our Sun, the nearest star, Proxima Centauri, is more than 4 light years away. As Earth spins on its axis, we, as Earth-bound observers, spin past this background ...
Notes on Sun-Earth-Moon (pg. 119)
... Only stars with more than 40 times the mass of the Sun form black holes when they die. This happens after a supernova. 10. Describe what happens to an average star and a massive star when each runs out of fuel. Small and medium stars become white dwarfs and eventually black dwarfs. A giant star can ...
... Only stars with more than 40 times the mass of the Sun form black holes when they die. This happens after a supernova. 10. Describe what happens to an average star and a massive star when each runs out of fuel. Small and medium stars become white dwarfs and eventually black dwarfs. A giant star can ...
Spectra of stars
... You can see that the spectrum is basically a continuous spectrum from violet to red but it is covered with many fine dark lines. These are absorption lines and in a real stellar spectrum there would be many hundreds of these spread across the whole spectrum. A black and white version of the spectrum ...
... You can see that the spectrum is basically a continuous spectrum from violet to red but it is covered with many fine dark lines. These are absorption lines and in a real stellar spectrum there would be many hundreds of these spread across the whole spectrum. A black and white version of the spectrum ...
At the Heart of the Matter: The Blue White Dwarf in M 57. Paul Temple
... has a density of 1 x 109 kg/m3. In comparison, the earth itself has an average density of only 5.4 x 103 kg/m3. That means a white dwarf is 200,000 times as dense! ...
... has a density of 1 x 109 kg/m3. In comparison, the earth itself has an average density of only 5.4 x 103 kg/m3. That means a white dwarf is 200,000 times as dense! ...
First Exam - University of Iowa Astrophysics
... 26. You look up in the night sky and see the planet Jupiter, the planet Mars, and the Moon very close together. You know that they are located in or close to one of the following. Which is it? (a) the ecliptic ∗ (b) the celestial equator (c) the zenith (d) the north celestial pole (e) the constellat ...
... 26. You look up in the night sky and see the planet Jupiter, the planet Mars, and the Moon very close together. You know that they are located in or close to one of the following. Which is it? (a) the ecliptic ∗ (b) the celestial equator (c) the zenith (d) the north celestial pole (e) the constellat ...
EARTH SCIENCE KEY NOTES
... Celestial Object – Any object outside or above Earth’s atmosphere. Galaxy- A large group (billions) of stars (held together by gravity). Our galaxy is a spiral galaxy called the Milky Way. Our solar system is in one of the arms of the Milky Way. Solar System- The sun and all the objects that r ...
... Celestial Object – Any object outside or above Earth’s atmosphere. Galaxy- A large group (billions) of stars (held together by gravity). Our galaxy is a spiral galaxy called the Milky Way. Our solar system is in one of the arms of the Milky Way. Solar System- The sun and all the objects that r ...
NASA Training Activity 2 Astronomy
... The Universe - 93 billion light years in _____________________________________ o The Milky Way Galaxy - 100,000 light years in diameter Our Solar System - the Sun's gravity extends out to around 2 light years. So it is about 4 light years in diameter. Earth – 3rd planet to our Sun ...
... The Universe - 93 billion light years in _____________________________________ o The Milky Way Galaxy - 100,000 light years in diameter Our Solar System - the Sun's gravity extends out to around 2 light years. So it is about 4 light years in diameter. Earth – 3rd planet to our Sun ...
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.