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The First Astronomy…
The First Astronomy…

Stars and their Properties
Stars and their Properties

... Stars are so far away so it’s safe to look at them All stars are made up of 75% hydrogen and 25% helium Parallax – Apparent movement of an object based on your own movement You cannot see parallax with the naked eye LARGEST Parallax measurements are 1/3600th of a degree!! 1/60th of a degree = 1 arc ...
Sammy Nagel · Annie Jump Cannon
Sammy Nagel · Annie Jump Cannon

... She discovered a system for describing how hot stars are. She used a mnemonic device to remember the letters. the letters were O B A F G K M. The mnemonic was "Oh, be a fine girlkiss me" The O is the hottest star. The M is the coolest star. G is the same as the sun. The hottest two stars are O and B ...
http://circle.adventist.org/files/nadspiritual/SpaceScience.pdf
http://circle.adventist.org/files/nadspiritual/SpaceScience.pdf

... Here is an example of what you will find from the book Education from E.G. White: The stars also have a message of good cheer for every human being. In those hours that come to all, when the heart is faint and temptation presses sore; when obstacles seem insurmountable, life's aims impossible of ac ...
Star Constellations - rosedalegrade9astronomy
Star Constellations - rosedalegrade9astronomy

Ancient Astronomers
Ancient Astronomers

Stars, Galaxies, and the Universe
Stars, Galaxies, and the Universe

Homework, November 16, 2006 AST110-6
Homework, November 16, 2006 AST110-6

... how many stars have Earth-like planets, nor do we know the likelihood that such planets might harbor advanced civilizations like our own. However, some stars can probably be ruled out as candidates for advanced civilizations. For example, given that it took a few billion years for humans to evolve o ...
PHYSICS DEPARTMENT Syllabus: Phys 200 (3 cr
PHYSICS DEPARTMENT Syllabus: Phys 200 (3 cr

15.3 The Lives of Stars
15.3 The Lives of Stars

Chapter 8 lesson 4 Notes
Chapter 8 lesson 4 Notes

... As they get closer together they collide with each other. ...
Name: Notes – #45 The Diverse Sizes of Stars 1. A Hertzsprung
Name: Notes – #45 The Diverse Sizes of Stars 1. A Hertzsprung

... 6. Super giants tend to have surface temperatures cooler than the sun but emit 104 time or more energy than the Sun. Why is this true? 7. The size of the star Betelgeuse in the constellation Orion is approximately the same size as ____________’s orbit around the Sun. 8. What stars have the same temp ...
Use this form to take notes in class about stars
Use this form to take notes in class about stars

... “clump” together? ______________ _____________________________________________________________ 3. What causes the center of the “core” to heat up? ...
I. Parallax
I. Parallax

Patterns in the night sky - Laureate International College
Patterns in the night sky - Laureate International College

... The distance between stars and galaxies is too great to be covered in a human lifetime. AUs are not sufficient. A light-year is the distance that light travels in one year. Light travels at a speed of 300 000 km/s – the fastest! ...
Ch 29 Sun and Solar Activity
Ch 29 Sun and Solar Activity

... atmosphere, disrupt longrange radios, satell. & radar • solar flame animation ...
PPT - University of Delaware
PPT - University of Delaware

... of comes from stars, their winds, and their deaths. WR wind bubble NGC 2359 ...
Star Life Cycle  and classroom textbooks for research!
Star Life Cycle and classroom textbooks for research!

... You may type your answers directly within this document or in PowerPoint. Turn your assignment into the _DragNDrop folder when finished. 1. Give a short definition for the following terms using your own words. (1 pt. each) a. b. c. d. ...
File
File

... 24) What shape is the Milky Way? 25) What is the local group? 26) How many stars are in the Milky Way? 27) Approximately how big is the Milky Way 28) The largest known galaxy is what type of galaxy? 29) What is a light year? Section 4 30) What is cosmology? 31) How old is the universe? 32) What is t ...
StarType
StarType

... þ Lõõ °TÐÿÿÿÿÿÿÿÿ÷& à=Ð/Ð8Types of Stars When you look at the stars you’ll notice that some are white, some are yellow, and some are red. Stars are classified according to their colors, ranging from electric blue for the hottest stars to dull red for the coolest stars. Early spectrometers identified ...
Stars Part 2 - westscidept
Stars Part 2 - westscidept

... • Absolute magnitude is a measure of how bright a star would be if the star were 32.6 light-years away from Earth. • The absolute magnitude of the sun is +4.8. But because the sun is so close to Earth, its apparent magnitude is -26.8, which makes it the brightest object in the sky. ...
Dynamite Diameters
Dynamite Diameters

...  32 diameters of stars measured in the visible  Empirical temperature scale for stars hotter than our Sun is based upon this data ...
Introduction to Astronomy
Introduction to Astronomy

... The Sun’s Interior Nuclear reactions only take place in the innermost 30% of the sun’s radius. The central density is 150 times that of water; the central temperature is 15 million kelvin. ...
Notes - CH 12
Notes - CH 12

...  Planets, comets, and asteroids shine by ...
Astronomy - Wappingers Central School District
Astronomy - Wappingers Central School District

... sure yet how to test 50 teams at States on the use of DS9 image viewing software, and won’t use it at all for regionals. ...
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Hipparcos



Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial objects on the sky. This permitted the accurate determination of proper motions and parallaxes of stars, allowing a determination of their distance and tangential velocity. When combined with radial-velocity measurements from spectroscopy, this pinpointed all six quantities needed to determine the motion of stars. The resulting Hipparcos Catalogue, a high-precision catalogue of more than 118,200 stars, was published in 1997. The lower-precision Tycho Catalogue of more than a million stars was published at the same time, while the enhanced Tycho-2 Catalogue of 2.5 million stars was published in 2000. Hipparcos‍ '​ follow-up mission, Gaia, was launched in 2013.The word ""Hipparcos"" is an acronym for High precision parallax collecting satellite and also a reference to the ancient Greek astronomer Hipparchus of Nicaea, who is noted for applications of trigonometry to astronomy and his discovery of the precession of the equinoxes.
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