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intro.phys.psu.edu
intro.phys.psu.edu

... of the Moon and the Earth. When he calculated the width of the Earth's shadow during the eclipse, he found the diameter of the Earth is three times of the moon’s. ...
PPT - ILWS
PPT - ILWS

... moderate missions) by National Research Council in the 2003 Decadal Survey. Program Future US Science and Technology Definition Team report complete Outgrowth of 2nd last Bi-lat: Is it possible to define a joint Solar Orbiter (ESA) - Solar Sentinel Mission that provides scientific and programmatic a ...
Patterns in the Sky
Patterns in the Sky

... of celestial objects. 2. Celestial objects in the Solar System have unique properties. 3. Some celestial objects can be seen with the unaided eye and can be identified by their motion. 4. The Sun emits light and other forms of radiant energy that are necessary for life to exist on Earth. 5. Satellit ...
here - IPAC
here - IPAC

... possible, however, to reconstruct the largest galaxies in full measure by using pieces of the 2MASS imaging data set. The Large Galaxy Atlas will consist of galaxies ranging in size from 2 to 30, assembled in two science products: J (1.1 m), H (1.6 m) and Ks (2.2 m) 3-band image atlas and a tab ...
Our Sun - STEMpire Central
Our Sun - STEMpire Central

... E. cooler, darker regions of the Sun’s surface F. outer layer of solar atmosphere, hottest and least dense G. white hot, extra bright patches of the solar surface H. dark veins of cooler floating gas loops, seen head on I. violent eruption of gas and plasma from the surface, ejected into space J. wh ...
Lecture 3 - Night Sky and Motion of the Earth around the Sun
Lecture 3 - Night Sky and Motion of the Earth around the Sun

... 2) The rotation of the Earth is tilted relative to its orbit ...
Oct 2015 - Bays Mountain Park
Oct 2015 - Bays Mountain Park

... the sky. Pegasus has a few deep sky objects in it like M15. It is a globular cluster with a magnitude of 6.4. M15 is 34,000 lightyears from Earth. There are also a few galaxies in Pegasus as well. There is NGC 7331, which is a spiral galaxy about 38 million light-years away and another galaxy is NGC ...
observingnebulaeclusters-1
observingnebulaeclusters-1

... above the critical limit required for stars to form within the nebula. Visible to the naked eye as the middle "star" in the "sword" of the constellation Orion, the nebula is located 1500 light years from Earth. A closer image taken with the Wide Field Planetary Camera 2 aboard the Hubble Space Teles ...
The Extragalactic Distance Database: Color–Magnitude Diagrams
The Extragalactic Distance Database: Color–Magnitude Diagrams

The Sun: Not An Average Yellow Star
The Sun: Not An Average Yellow Star

... Most stars in the Universe are small, cool, low-mass dwarfs. The Sun is larger, hotter, and more massive than these. There are stars that are much larger, very hot, and many times more massive than the Sun. But these stars are quite rare compared to the Sun or the lowmass stars. The Sun is also not ...
Ch2a
Ch2a

... The Elevation of the North Pole Star The north pole star is always at an elevation, or altitude, a, above the northern horizon, that is equal to the latitude, of the observer. Circumpolar stars are stars which are always in view. They never set below the horizon. All stars with declinations  ...
early astronomical history
early astronomical history

... relative to Earth were determined by Aristarchus about 75 years before Eratosthenes measured the Earth’s size – These relative sizes were based on the angular size of objects and a simple geometry formula relating the object’s diameter, its angular size, and its distance – Aristarchus realizing the ...
File
File

... • Main Sequence Stars • About 90% of all stars in the universe are main sequence stars. • The main sequence can be found on a narrow band running from the upper left corner (hot, bright stars) to the lower right corner (cool, dim stars) on the H-R diagram. • The distinguishing characteristic of main ...
Internet URLs
Internet URLs

... www.telescope.com/ A.k.a. Orion Telescope and Binocular Center: Astronomy equipment superstore. Lots of useful information about equipment and what all the terminology means. Prices are a tad higher here, but this is a full service, no hassle store. ...
Observing Information for Waddesdon, 4th October 2014
Observing Information for Waddesdon, 4th October 2014

... Vega is the brightest of the three stars; it is almost overhead high to the S or SW and is the brightest star in the constellation Lyra. It is 25 light years away so quite close. Altair is south and about half way from the horizon to the Zenith. It is the brightest star in the constellation Aquila, ...
telescope as time machine - Galaxy Evolution Explorer
telescope as time machine - Galaxy Evolution Explorer

... Scientists know that the universe is expanding. Like a chocolate chip cake in the oven, space is the “cake batter” that keeps getting bigger and bigger, while the stars and galaxies are the “chocolate chips” that keep getting farther and farther apart. Like energy pulsing through the ocean, light en ...
Transits
Transits

... James Webb Space Telescope • JWST will be a 6.5-m thermal-IR (cooled) telescope • Scheduled deployment: ...
CSU Remote Telescope - Education Services Australia
CSU Remote Telescope - Education Services Australia

Apparent brightness
Apparent brightness

... Classification of Stars  Color and temperature can classify stars well enough but SPECTROSCOPY gives us spectral-line radiation which is a much more detailed classification theme.  The composition of these stars are the same the difference in absorption spectra is temperature. ...
Denton ISD
Denton ISD

CS3_Ch 4 - Leon County Schools
CS3_Ch 4 - Leon County Schools

... from Greek astron, means “star”; Greek bios, means “life”; and Greek logia, means “study” ...
Stars
Stars

... a. a solar year b. a parallax c. a light-year d. magnitude 27. The distance that light travels in one year; about 90.46 trillion kilometers, is ...
Star Formation
Star Formation

... – The first phrase is risqué enough (for the Victorian 19th century) ...
Welcome guide to Astronomy
Welcome guide to Astronomy

... Such photographs need long exposures of many minutes or even hours. The human eye does not take time exposures. It cannot perceive colors in dim light. What the eye can do is see very fine detail in structure and contrast. Your telescope’s range is limited only by your willingness to be patient, to ...
Binary Star Systems Discussion Points 1. What characteristic of a
Binary Star Systems Discussion Points 1. What characteristic of a

... c) One of the stars is too small or too dim to be able to see it against the glare of the larger, brighter star. 7. The spectroscopic lines periodically split and recombine. 8. Mizar in Ursa Major 9. Dubhe in Ursa Major, Capella in Auriga, Regulus in Leo 10. Eclipsing binary star 11. They are edge-o ...
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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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