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Exploring the cosmos
Exploring the cosmos

... He was one of the first people to use a telescope in Japan after the instrument was introduced by European traders. The map combines Shibukawa’s systematic observations with concepts from Chinese astrology, so that the stars could be used to predict events in different regions of Japan. ...
Ay 7A - Fall 2010 Section Worksheet 5 Telescopes
Ay 7A - Fall 2010 Section Worksheet 5 Telescopes

... summit of Mauna Kea, in Hawaii. The focal length of Keck is 17.5m. In contrast, the Hubble Space Telescope(HST) has a primary mirror 2.4m in diameter, and is in orbit around the Earth. The focal length of HST is 57.6m. (a) If it takes one of the Keck telescopes 1 hour to collect enough light to make ...
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... called  dwarf  galaxies.  (Our  own  Milky  Way  has  200–400  billion  stars.)  The   supernovae,  which  are  almost  a  hundred  times  brighter  than  their  host  galaxies,   illuminate  their  environments  like  distant  street  lamp ...
The correct answers are written in bold, italic and underlined. The
The correct answers are written in bold, italic and underlined. The

... • not change at all. The intensity of radiation increases at all wavelengths, but the peak wavelength does not change. 10. A perfect blackbody is so-called by scientists because • it absorbs all energy falling on it and emits no energy at all, hence its name. • it absorbs all energy falling upon it ...
imaging science in astronomy - RIT CIS
imaging science in astronomy - RIT CIS

proposed another geocentric _ _ _ _ _.
proposed another geocentric _ _ _ _ _.

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Chapter 5 - Astronomy
Chapter 5 - Astronomy

... in the range of 3 to 180 m. The telescope has a shield to protect it from the Sun and the Earth’s infrared radiation, and it is cooled to 5.2 K by liquid helium, so that it can observe ...
Space Review 2
Space Review 2

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1 - BYU Physics and Astronomy

... 220×106, (d) 4.6×109, (e) 10×109. 55. The cosmic microwave background has a spectral profile shaped like that of a black body of temperature 2.73K because (a) that is the temperature of the gas which emitted it, (b) that is the temperature of the intergalactic medium through which it has passed, (c) ...
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antarctic and associated exploration book collection
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... ENvironment, GEochemistry, and Ranging) spacecraft made its first closest approach to Mercury in mid-January, acquiring images of a hemisphere not viewed by previous spacecraft. Intention is to make two further fly-bys as it is manoeuvred into a fixed near-circular orbit in March 2011. Particular in ...
The Turbulent Birth of Stars and Planets - Max-Planck
The Turbulent Birth of Stars and Planets - Max-Planck

... be an orbiting body. It is located about a billion kilometers away from its central star, a distance comparable to that between Jupiter and the Sun. But these observations are at the limits of what is technically feasible for the astronomers. They were thus unable to determine beyond all doubt exact ...
Stars and Galaxies Section 1 Stars
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Glossary - Royal Astronomical Society of Canada
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... the apparent path that the Sun traces out in the sky during the year, so named because eclipses occur when the full or new Moon is very close to this path of the Sun ...
Cat`s EyE - Chandra X
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... ago because these objects looked like planets through small optical telescopes. Rather, a planetary nebula is a stage of life that our Sun will experience billions of years from now (see illustration below). ...
Chapter 30
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... seen in the sky during different seasons of the year? A. Stellar motion around Polaris B. Earth’s rotation on its axis C. Earth’s revolution around the sun D. Position north or south of the equator ...
Mon Feb 13, 2012 JULES VERNE The French science fiction writer
Mon Feb 13, 2012 JULES VERNE The French science fiction writer

... Near the top of the sky this early evening, you’ll find a small, distinctive group of stars known as the Seven Sisters. Even with street lights shining, you can find them, although the serious light pollution problems we experience here reduces the Seven Sisters down to just two or three, or possibl ...
PRIMARY SOURCE from Starry Messenger
PRIMARY SOURCE from Starry Messenger

... which they have been revealed to our senses. Surely it is a great thing to increase the numerous host of fixed stars previously visible to the unaided vision, adding countless more which have never before been seen, exposing these plainly to the eye in numbers ten times exceeding the old and familiar ...
Sirius Astronomer - Orange County Astronomers
Sirius Astronomer - Orange County Astronomers

... last year and President this year. For those of you that know me, I'm not a very talkative person, especially when it comes to written correspondence. I'm usually brief and to the point. So, if this letter seems short, have a good laugh because it’s probably twice as long as my usual letters. OCA is ...
Worldly Wise 3000
Worldly Wise 3000

... planets that rotate around the sun. About five billion years ago, the sun and planets were formed out of clouds of gas and dust. Gravity pulled the chunks and pieces together to make lumps of matter. These lumps slowly got bigger as more and more dust was added to them. The largest lump became the s ...
The Historical Evolution of the Telescope
The Historical Evolution of the Telescope

... and combinations of the two [2]. But it wasn’t until just after World War II that new types of telescopes would give cosmologists a drastically different, yet scientifically relevant, look at the universe. The radio telescope emerged in 1932, after Karl Jansky designed receivers with directive aeria ...
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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.
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