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Cosmic year
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#	Item
31	The Hand of Chandra! A small, dense object only twelve miles in diameter is responsible for this beautiful X-ray nebula that spans 150 light years and resembles a Add to Reading List Source URL: spacemath.gsfc.nasa.gov Language: English - Date: 2009-07-20 16:07:48 Parsec Cosmic distance ladder Light-year Pulsar Astronomy Space Parallax
32	Retiring This Year Anderson Bacher Add to Reading List Source URL: calteches.library.caltech.edu Language: English - Date: 2012-12-26 00:09:16 Nobel laureates in Physics Quantum electrodynamics Association of Independent Technological Universities California Institute of Technology San Gabriel Valley Cosmic ray Richard Feynman Muon Clark Blanchard Millikan Physics Science Leptons
33	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
34	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
35	The Hand of Chandra! A small, dense object only twelve miles in diameter is responsible for this beautiful X-ray nebula that spans 150 light years and resembles a Add to Reading List Source URL: www.chandra.harvard.edu Language: English - Date: 2011-10-05 09:48:57 Parsec Cosmic distance ladder Light-year Pulsar Astronomy Space Parallax
36	A Study of Astronaut Radiation Dosages The typical radiation dosage on the ground is about 1.0 milliRad/day or 360 milliRad/year. This dosage is considered safe, and it is an unavoidable part of the natural background t Add to Reading List Source URL: spacemath.gsfc.nasa.gov Language: English - Date: 2007-11-20 15:23:56 Edwards Air Force Base Space stations Space Shuttle International Space Station Astronaut STS-31 Health threat from cosmic rays Space Shuttle Atlantis Spaceflight Manned spacecraft Human spaceflight
37	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
38	The Hand of Chandra! A small, dense object only twelve miles in diameter is responsible for this beautiful X-ray nebula that spans 150 light years and resembles a Add to Reading List Source URL: spacemath.gsfc.nasa.gov Language: English - Date: 2009-07-20 16:07:48 Parsec Cosmic distance ladder Light-year Pulsar Astronomy Space Parallax
39	Equations with one variable II Calculations involving a single variable come up in many different ways in astronomy. One way is Add to Reading List Source URL: spacemath.gsfc.nasa.gov Language: English - Date: 2010-05-02 04:38:56 Cosmic distance ladder Parsec Milky Way Light-year Astronomy Physical cosmology Astrometry
40	Microsoft Word - 124_KS_JJ_f.doc Add to Reading List Source URL: www.ifjungo.ch Language: English - Date: 2014-03-27 09:52:31 Bernese Oberland Cosmic ray International Geophysical Year Solar cycle Ionizing radiation Forbush decrease Jungfrau Real-time Neutron Monitor Database Neutron Physics Alps Neutron monitor

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