幻灯片 1
... Features of DS Stars Hydrogen-burning stage with 1.5-2.5 solar mass Short-period ...
... Features of DS Stars Hydrogen-burning stage with 1.5-2.5 solar mass Short-period ...
Episode 21: Amazing Reflectors
... because it contains four matched optical surfaces and must be made of high-quality glass. Another problem with refractor is that one can not go for making the aperture size more than 1 meter in diameter because such large lenses sag under their own weight. Also large refractors have very long telesc ...
... because it contains four matched optical surfaces and must be made of high-quality glass. Another problem with refractor is that one can not go for making the aperture size more than 1 meter in diameter because such large lenses sag under their own weight. Also large refractors have very long telesc ...
Extra Credit
... Something disturbs the comet's orbit -- like the gravity of a passing star -- starting it on a long fall toward the Sun. As a comet approaches the Sun, some of its ice vaporizes, freeing particles of rock as well. This material forms a bright cloud around the comet. And some of the material is pushe ...
... Something disturbs the comet's orbit -- like the gravity of a passing star -- starting it on a long fall toward the Sun. As a comet approaches the Sun, some of its ice vaporizes, freeing particles of rock as well. This material forms a bright cloud around the comet. And some of the material is pushe ...
IBTcom - GBT - National Radio Astronomy Observatory
... Sue Ann Heatherly National Radio Astronomy Observatory www.nrao.edu ...
... Sue Ann Heatherly National Radio Astronomy Observatory www.nrao.edu ...
The Sun and Other Stars - Tuslaw Local School District
... * 5 x’s the mass of the sun, 30 km in diameter * the gravity is so strong nothing can escape including light! ...
... * 5 x’s the mass of the sun, 30 km in diameter * the gravity is so strong nothing can escape including light! ...
The Daily Telegraph – London… 14th February 2008… New Solar
... Astronomers have identified two new planets orbiting a star about half the size of our sun some 5,000 light-years away. The system, called OGLE-2006-BLG-109L, resembles a slightly scaled down version of our Solar system because the two gas giant planets are similar sizes relative to their star as Ju ...
... Astronomers have identified two new planets orbiting a star about half the size of our sun some 5,000 light-years away. The system, called OGLE-2006-BLG-109L, resembles a slightly scaled down version of our Solar system because the two gas giant planets are similar sizes relative to their star as Ju ...
Fast Facts - Canada France Hawaii Telescope
... With ESPaDOnS, the only high-resolution spectropolarimeter available on 4-m class or larger telescopes, astronomers can now observe with unprecedented details the magnetic field around stars, opening information on the physics of stars that was previously only available for our closest star, the Sun ...
... With ESPaDOnS, the only high-resolution spectropolarimeter available on 4-m class or larger telescopes, astronomers can now observe with unprecedented details the magnetic field around stars, opening information on the physics of stars that was previously only available for our closest star, the Sun ...
red giant - Teacher Pages
... measured in light-years - the distance that light travels in one earth year 2. The closest stars to Earth are 4.3 light-years away ...
... measured in light-years - the distance that light travels in one earth year 2. The closest stars to Earth are 4.3 light-years away ...
NEO lecture 02 - Observations of NEOs
... The camera at ESA’s telescope on Tenerife is cooled by liquid nitrogen to temperatures such that the dark current and its noise contribution can be neglected. The readout is slow enough so that also its noise contribution can be neglected. The camera is operated with a bias of DNbias ~ 8000. For a ...
... The camera at ESA’s telescope on Tenerife is cooled by liquid nitrogen to temperatures such that the dark current and its noise contribution can be neglected. The readout is slow enough so that also its noise contribution can be neglected. The camera is operated with a bias of DNbias ~ 8000. For a ...
Grade 9 Unit 4: Space
... a. Define and describe how the following phenomena affect life on Earth. (sun-spots, solar flares, and solar radiation)(390-396) 4. Characteristics of Celestial Bodies in the Solar System a. Compare and contrast the composition of the four inner rocky (terrestrial) planets with the four outer gaseou ...
... a. Define and describe how the following phenomena affect life on Earth. (sun-spots, solar flares, and solar radiation)(390-396) 4. Characteristics of Celestial Bodies in the Solar System a. Compare and contrast the composition of the four inner rocky (terrestrial) planets with the four outer gaseou ...
May 2010 - Pomona Valley Amateur Astronomers
... Part 1: Gran Telescopio Canarias Currently, the largest single-aperture optical telescope is the 10.4-meter Gran Telescopio Canarias (GTC) on La Palma in the Canary Islands, which is just slightly larger than either of the 10meter Keck telescopes on Mauna Kea. The GTC is unusual for more than just i ...
... Part 1: Gran Telescopio Canarias Currently, the largest single-aperture optical telescope is the 10.4-meter Gran Telescopio Canarias (GTC) on La Palma in the Canary Islands, which is just slightly larger than either of the 10meter Keck telescopes on Mauna Kea. The GTC is unusual for more than just i ...
Space
... Another method to determine position and movement of celestial bodies (such as the Sun, Moon and planets) involves using the stars as the frame of reference instead of the Earth. Note which bright stars are around Venus and take note of the location of Venus relative to these bright stars. The next ...
... Another method to determine position and movement of celestial bodies (such as the Sun, Moon and planets) involves using the stars as the frame of reference instead of the Earth. Note which bright stars are around Venus and take note of the location of Venus relative to these bright stars. The next ...
Stellar Nucleosynthesis
... of lithium, boron, and beryllium were created when the universe was created in the Big Bang. • The rest of the elements were produced as a result of fusion reactions in the core of stars- stellar necleosynthesis. ...
... of lithium, boron, and beryllium were created when the universe was created in the Big Bang. • The rest of the elements were produced as a result of fusion reactions in the core of stars- stellar necleosynthesis. ...
OUSNMAR05 - The Open University
... orientation of the map may differ from that of the observed image of the Moon depending on the type of telescope used. If you find the Moon too bright use a filter to reduce the glare. At times features along different parts of the limb are better presented due the effect of libration – an apparent ...
... orientation of the map may differ from that of the observed image of the Moon depending on the type of telescope used. If you find the Moon too bright use a filter to reduce the glare. At times features along different parts of the limb are better presented due the effect of libration – an apparent ...
15.3 The Lives of Stars
... of a very massive star • 5 times the mass of the sun packed into a sphere the size of a marble • Gravity so strong nothing, not even light, can escape • Quasars are black holes millions of light years away that shine very bright (galaxies with black holes in the center) ...
... of a very massive star • 5 times the mass of the sun packed into a sphere the size of a marble • Gravity so strong nothing, not even light, can escape • Quasars are black holes millions of light years away that shine very bright (galaxies with black holes in the center) ...
Stella Star, Ace Reporter Menu Print Lesson
... 7. “I do not agree with my mentor’s theory that the sun revolves around the Earth. I have used his precise data to propose another theory in which all of the planets revolve around the sun in elliptical orbits.” ...
... 7. “I do not agree with my mentor’s theory that the sun revolves around the Earth. I have used his precise data to propose another theory in which all of the planets revolve around the sun in elliptical orbits.” ...
Lesson Power Point
... the rest of the objects in the solar system put together. The next largest object is the planet Jupiter. ...
... the rest of the objects in the solar system put together. The next largest object is the planet Jupiter. ...
Section 22.1 Earth Science
... Observatories = buildings that have dome-shaped roofs for viewing the sky. Not all telescopes are located in observatories. The Hubble Space Telescope is an example of one. The Hubble Space Telescope High quality images ...
... Observatories = buildings that have dome-shaped roofs for viewing the sky. Not all telescopes are located in observatories. The Hubble Space Telescope is an example of one. The Hubble Space Telescope High quality images ...
Slayt 1
... • But how did these elements came into our body? • What happens to a star after it exhausts all ...
... • But how did these elements came into our body? • What happens to a star after it exhausts all ...
Science 9 – Space Exploration
... 10. When measuring the diameter of the sun, we use an indirect method, so that we can determine the diameter without actually measuring it directly. To calculate the accuracy of your measured value, this is calculated to show how far from the real value your measured value is … A. actual error B. e ...
... 10. When measuring the diameter of the sun, we use an indirect method, so that we can determine the diameter without actually measuring it directly. To calculate the accuracy of your measured value, this is calculated to show how far from the real value your measured value is … A. actual error B. e ...
PARTS OF THE UNIVERSE
... once packed into a tiny particle smaller than a speck of dust. v The particle began to expand and matter and energy moved rapidly outward in all directions. v The matter cooled and collected to form stars, galaxies, nebulae, and planets. v Most scientists believe the universe is about 13.7 bil ...
... once packed into a tiny particle smaller than a speck of dust. v The particle began to expand and matter and energy moved rapidly outward in all directions. v The matter cooled and collected to form stars, galaxies, nebulae, and planets. v Most scientists believe the universe is about 13.7 bil ...
prof.-j.hill
... center of the telescope to produce phased-array imaging of an extended field (up to 1 arcmin diameter). These optically phased images provide the diffraction-limited image sharpness of a 22.65-meter telescope. Active and adaptive optics augment the telescope performance from visible to mid-infrared ...
... center of the telescope to produce phased-array imaging of an extended field (up to 1 arcmin diameter). These optically phased images provide the diffraction-limited image sharpness of a 22.65-meter telescope. Active and adaptive optics augment the telescope performance from visible to mid-infrared ...
Orion-pr-2009 - Astrophysics Research Institute
... dynamical star formation in and around the well-known Great Nebula of Orion. They have found this stellar nursery to be a lively and somewhat overcrowded place, with young stars emitting gas jets in all directions, creating quite a chaotic picture. There is much more going on in Orion than previousl ...
... dynamical star formation in and around the well-known Great Nebula of Orion. They have found this stellar nursery to be a lively and somewhat overcrowded place, with young stars emitting gas jets in all directions, creating quite a chaotic picture. There is much more going on in Orion than previousl ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.