level 1
... How much farther from the Sun is Barnard’s Star than Pluto? Proxima Centuri than Pluto and Uranus? Use powers of ten and estimate it! Students should use powers of ten to estimate. Barnard’s Star is about 10,000 times farther from the Sun than Pluto. Proxima Centuri is also about 10,000 times farthe ...
... How much farther from the Sun is Barnard’s Star than Pluto? Proxima Centuri than Pluto and Uranus? Use powers of ten and estimate it! Students should use powers of ten to estimate. Barnard’s Star is about 10,000 times farther from the Sun than Pluto. Proxima Centuri is also about 10,000 times farthe ...
Goal: To understand how we know distances to various
... • If you compare the apparent and absolute magnitudes of an object you get its distance. • How to do that? • 1) spectra – tells you what the mass of the star is by its temperature and its spectral type (although does not work so well for giants – works great for main sequences stars, but this separa ...
... • If you compare the apparent and absolute magnitudes of an object you get its distance. • How to do that? • 1) spectra – tells you what the mass of the star is by its temperature and its spectral type (although does not work so well for giants – works great for main sequences stars, but this separa ...
1 Dr. Steve Hawley Volume 35 Number 04 APRIL 2009
... It worked well enough for Apollo. Back then, astronauts needed to stay on the Moon for only a few days at a time. But when NASA once again sends people to the Moon starting around 2020, the plan will be much more ambitious—and the hardware is going to need a major upgrade. “Doing all the things we w ...
... It worked well enough for Apollo. Back then, astronauts needed to stay on the Moon for only a few days at a time. But when NASA once again sends people to the Moon starting around 2020, the plan will be much more ambitious—and the hardware is going to need a major upgrade. “Doing all the things we w ...
The Sun - Ccphysics.us
... • As the globule gets smaller, each particle is more likely to bang into another one • The consequence of all this banging increases the pressure, much like people squeezing into the exits after a concert • As pressure increases so does the temperature, like squeezing air in a bicycle pump • Ultimat ...
... • As the globule gets smaller, each particle is more likely to bang into another one • The consequence of all this banging increases the pressure, much like people squeezing into the exits after a concert • As pressure increases so does the temperature, like squeezing air in a bicycle pump • Ultimat ...
12_Doppler (Mar 12)
... an absorption spectrum that is redshifted relative to an unmoving star an emission spectrum that is redshifted relative to an unmoving star a continuous spectrum that is blueshifted relative to an unmoving star an absorption spectrum that is blueshifted relative to an unmoving star a continuous spec ...
... an absorption spectrum that is redshifted relative to an unmoving star an emission spectrum that is redshifted relative to an unmoving star a continuous spectrum that is blueshifted relative to an unmoving star an absorption spectrum that is blueshifted relative to an unmoving star a continuous spec ...
Working with the Illinois Learning Standards: A Constructivist
... • chart the motion of the moon from night to night on a star map; note changes of position among the stars and in the sky • to simulate the apparent annual motion of the sun, have one student walk around another non-moving student; surround this pair by the whole class of students; have the orbitin ...
... • chart the motion of the moon from night to night on a star map; note changes of position among the stars and in the sky • to simulate the apparent annual motion of the sun, have one student walk around another non-moving student; surround this pair by the whole class of students; have the orbitin ...
Conversations with the Earth
... • You need “metals” to make planets –Metals are elements heavier in mass than helium ...
... • You need “metals” to make planets –Metals are elements heavier in mass than helium ...
Neither Star nor Trigram - 5 Yellow Focus of Attention
... comes in as factor behind pole reversal, changing Yin Qi into Yang. As we are practitioners of 9 Stars and Luoshu, then almost as an automation would we presume that such 3 Wood Luoshu had come to account of Star 3 to appear at the central Luoshu Palace. While rather, we’d have such 3 Wood Luoshu in ...
... comes in as factor behind pole reversal, changing Yin Qi into Yang. As we are practitioners of 9 Stars and Luoshu, then almost as an automation would we presume that such 3 Wood Luoshu had come to account of Star 3 to appear at the central Luoshu Palace. While rather, we’d have such 3 Wood Luoshu in ...
Descriptions For Posters
... M81 or Bode's galaxy is a large bright spiral galaxy located 11.8 million light-years from Earth in the constellation of Ursa Major. With an apparent magnitude of +6.9 it's easily visible with binoculars, a fine target for small telescope owners and a wonderful sight in larger scopes. The galaxy is ...
... M81 or Bode's galaxy is a large bright spiral galaxy located 11.8 million light-years from Earth in the constellation of Ursa Major. With an apparent magnitude of +6.9 it's easily visible with binoculars, a fine target for small telescope owners and a wonderful sight in larger scopes. The galaxy is ...
Celebrating the centennial of a celestial yardstick
... of the equinox advances by those extra few hours and minutes each year (the exact timing varies somewhat because of the gravitational pull of the Moon and the other planets in the solar system). Leap Year essentially pushes the equinox back to its starting position every four years. So today, for th ...
... of the equinox advances by those extra few hours and minutes each year (the exact timing varies somewhat because of the gravitational pull of the Moon and the other planets in the solar system). Leap Year essentially pushes the equinox back to its starting position every four years. So today, for th ...
Star Birth - Sierra College Astronomy Home Page
... evolution as if they were alone. • The Algol paradox • Close binary pair of which one star is a 3.7 M main-sequence star and the other a 0.8 M subgiant. • If they were born at about the same time, how can the more massive star be a main-sequence star? ...
... evolution as if they were alone. • The Algol paradox • Close binary pair of which one star is a 3.7 M main-sequence star and the other a 0.8 M subgiant. • If they were born at about the same time, how can the more massive star be a main-sequence star? ...
Astronomy Assignment
... ‘We are all just Star Stuff”- Carl Sagan, truer words have never been spoken. Every atom of our bodies was formed in the core of some long dead star. But how and where and why? In order to answer these questions we must understand the stars themselves and the clouds from which they arise and often a ...
... ‘We are all just Star Stuff”- Carl Sagan, truer words have never been spoken. Every atom of our bodies was formed in the core of some long dead star. But how and where and why? In order to answer these questions we must understand the stars themselves and the clouds from which they arise and often a ...
005 Astrophysics problems
... (d) Estimate the potential energy required to raise your centre of gravity from a sitting position to a standing position on this star. (e) A 2 kg mass is dropped from a height of 100 m on this star. How long does it take to reach the surface of the star? 14. (a) How are photons affected by a massiv ...
... (d) Estimate the potential energy required to raise your centre of gravity from a sitting position to a standing position on this star. (e) A 2 kg mass is dropped from a height of 100 m on this star. How long does it take to reach the surface of the star? 14. (a) How are photons affected by a massiv ...
Gravitational redshifts
... synthetic line profiles) are shorter than laboratory values due to convective blueshift. Curves before and after mid-transit (µ = 0.21, 0.59, 0.87) are not exact mirror images due to intrinsic stellar line asymmetries. This simulation from a CO5BOLD model predicts the behavior of an Fe I line ( 620 ...
... synthetic line profiles) are shorter than laboratory values due to convective blueshift. Curves before and after mid-transit (µ = 0.21, 0.59, 0.87) are not exact mirror images due to intrinsic stellar line asymmetries. This simulation from a CO5BOLD model predicts the behavior of an Fe I line ( 620 ...
Mass Segregation in Globular Clusters
... processes achieve a balance, a stable structure appears. One feature that characterizes such a cluster is that all its members should have approximately the same kinetic energy. For less massive stars, this means that on average, their velocities should be higher by a specific and measurable amount. ...
... processes achieve a balance, a stable structure appears. One feature that characterizes such a cluster is that all its members should have approximately the same kinetic energy. For less massive stars, this means that on average, their velocities should be higher by a specific and measurable amount. ...
Sirius Astronomer - Orange County Astronomers
... 4, almost exactly through the aim point 435 mile from the comet. The first pictures showed a shape like a bowling pin, with multiple jets of material spewing out from both ends. One surprise is that the jets were not located at the warm point (directly under the sun), but were spread about both the ...
... 4, almost exactly through the aim point 435 mile from the comet. The first pictures showed a shape like a bowling pin, with multiple jets of material spewing out from both ends. One surprise is that the jets were not located at the warm point (directly under the sun), but were spread about both the ...
The Argonauts, background to the constellation Carina Argo Navis
... Keyhole Nebula, imaged by Hubble Space meteor shower, which peaks around January 21 each year. Telescope. The small nebula to the upper left has Eta Carinae's effects on the nebula can be seen directly: been nicknamed "finger of God" or "God's birdie", The dark globules in the image and some other l ...
... Keyhole Nebula, imaged by Hubble Space meteor shower, which peaks around January 21 each year. Telescope. The small nebula to the upper left has Eta Carinae's effects on the nebula can be seen directly: been nicknamed "finger of God" or "God's birdie", The dark globules in the image and some other l ...
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.