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Angular diameter
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#	Item
11	Microsoft Word - appearances_can_be_deceiving_final_nasareview Add to Reading List Source URL: pluto.jhuapl.edu Language: English - Date: 2014-12-15 16:32:16 Geometry Angular diameter Angular mil Angular distance Minute of arc Cosmic distance ladder Standard ruler Astrometry Measurement Angle
12	I ntroduction Busy educators sometimes have trouble finding ways to help their students feel the excitement of science in action. As a part of Add to Reading List Source URL: fermi.sonoma.edu Language: English - Date: 2009-09-11 13:17:07 Galaxies Astrophysics Local Group Spiral galaxies Angular diameter Supermassive black hole Cosmic distance ladder Milky Way Gamma-ray burst Astronomy Space Astrometry
13	Getting an Angle on the Sun and Moon The Sun (Diameter = 1,400,000 km) and Moon (Diameter = 3,476 km) have very different physical diameters in kilometers, but in the sky they can appear to be nearly the same size. Astr Add to Reading List Source URL: spacemath.gsfc.nasa.gov Language: English - Date: 2012-08-01 06:44:22 Space Angle Ballistics Minute of arc Angular diameter Moon Mare Serenitatis Sun Cosmic distance ladder Astrometry Astronomy Physics
14	Angular Size and Similar Triangles The corresponding sides of similar triangles are proportional to one another as the illustration to the left shows. Add to Reading List Source URL: spacemath.gsfc.nasa.gov Language: English - Date: 2011-10-18 09:17:02 Angle Astrometry Euclidean geometry Triangle Triangle geometry Similarity Angular diameter Angular mil Moon Geometry Triangles Astronomy
15	The Last Total Solar Eclipse…Ever! 25 Total solar eclipses happen because the angular size of the moon is Add to Reading List Source URL: spacemath.gsfc.nasa.gov Language: English - Date: 2012-08-01 06:37:04 Eclipses Celestial mechanics Solar eclipse Moon Sun Astronomical unit Angular diameter Tidal acceleration Magnitude of eclipse Astronomy Astrology Space
16	Deep Impact - Closing in on Comet 103P/Hartley 2 This image was taken by the Deep Impact spacecraft on September 20 as it approaches Comet Hartley 2 from a Add to Reading List Source URL: spacemath.gsfc.nasa.gov Language: English - Date: 2010-09-27 10:21:20 Deep Impact Comet 103P/Hartley Angular diameter EPOXI Spacecraft Spaceflight Discovery program
17	Chandra Explores Angular Size 26 Astronomers measure the sizes of objects in the sky in terms of their angular size. For instance, the moon Add to Reading List Source URL: spacemath.gsfc.nasa.gov Language: English - Date: 2009-04-03 09:00:34 Angle Angular diameter Elementary geometry Minute of arc Light-year Cosmic distance ladder Star Astronomy Astrometry Space
18	16 Eagle Nebula - Closeup The Hubble Space Telescope took the image of the Eagle Nebula (M16). This star-forming region is in the constellation Serpens, and located 6,500 light years from Earth. It is only about 6 milli Add to Reading List Source URL: spacemath.gsfc.nasa.gov Language: English - Date: 2009-01-01 10:37:00 NGC objects Planetary nebulae Angle Angular diameter Elementary geometry Light-year Hubble Space Telescope Cosmic distance ladder Solar System Astronomy Space Astrometry
19	Angular Size and Velocity The relationship between the distance to an object, R, the objects size, L, and the angle that it subtends at that distance,  is given by: Add to Reading List Source URL: spacemath.gsfc.nasa.gov Language: English - Date: 2013-09-09 12:33:12 Ballistics Minute of arc Manned spacecraft Angular diameter International Space Station Spaceflight Angle Astrometry
20	Chandra Explores Angular Size 26 Astronomers measure the sizes of objects in the sky in terms of their angular size. For instance, the moon Add to Reading List Source URL: www.chandra.harvard.edu Language: English - Date: 2011-10-05 09:52:23 Angle Angular diameter Elementary geometry Minute of arc Light-year Cosmic distance ladder Star Astronomy Astrometry Space

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