Orthographic projection; Azimuthal; Neither Conformal or Equal-area; Hipparchus; 2nd Century B. C. 

Source URL: www.csiss.org

Earth/matriX SCIENCE TODAY The Sun|Earth|Moon Relation: Polar/Mean/Equatorial Diameters and Circumferences

Source URL: earthmatrix.com

• Celestial mechanics
• Moons
• Sun
• Io
• Astronomical unit
• Hipparchus
• Astronomy
• Planemos
• Space

http://www.sciam.com/print_version.cfm?articleID=231B40A6-E7F2-

Source URL: tf.boulder.nist.gov

• Units of time
• Hipparchus
• Second
• Sexagesimal
• Degree
• Clock
• Hour
• Minute
• Sundial
• Measurement
• Orders of magnitude
• Horology

In the shadow of Hipparchus and the lunar eclipse of February 20th, 2008

Source URL: hyperion2.cc.uregina.ca

• Eclipses
• Ancient Greek mathematicians
• Aristarchus On the Sizes and Distances
• Astrological aspects
• Lunar eclipse
• Astronomical unit
• Moon
• Hipparchus
• Solar eclipse
• Astronomy
• Astrology
• Space

Microsoft Word - project final

Source URL: www.math.nus.edu.sg

• Space
• Parallax
• Obsolete scientific theories
• Ancient Greek mathematicians
• Optics
• Astronomical unit
• Stellar parallax
• Hipparchus
• Aristarchus of Samos
• Astrology
• Astronomy
• Astrometry

From the Roemer mission to Gaia by Erik Høg, Copenhagen • August 1989: Hipparcos launched • [removed]dialogue with Russian colleagues • Proposal 1992 at IAU Symposium in Shanghai: Satellite in scanning mode with CC

Source URL: www.astro.ku.dk

• Astrometry
• Parallax
• Space telescopes
• Hipparcos
• European Space Agency
• Tycho-2 Catalogue
• Gaia
• Catalogues of Fundamental Stars
• Hipparchus
• Spacecraft
• Astrology
• Spaceflight

What is Parallax? Parallax is when an object appears to change position when you view it from a different angle. Astronomers see the effects of parallax when they look at stars from different points on Earth’s orbit a

Source URL: www.universeadventure.org

• Parallax
• Measurement
• Trigonometry
• Optics
• Cosmic distance ladder
• Hipparchus
• Star
• Angle
• Stellar parallax
• Astrology
• Astrometry
• Astronomy

English_history_of_astrometry

Source URL: www.zah.uni-heidelberg.de

• Space
• Parallax
• Space telescopes
• European Space Agency
• Stellar astronomy
• Gaia
• Hipparcos
• Stellar parallax
• Hipparchus
• Astronomy
• Astrology
• Astrometry

Microsoft Word - Errata HPAA.doc

Source URL: www2.ups.edu

• 1st millennium BC
• Ancient Greece
• Humanities
• Hipparchus
• Atmospheric refraction
• Read

The Astronomical Companion 33 ah or i

Source URL: www.universalworkshop.com

• Orbit of the Moon
• Astronomy
• Ecliptic
• Orbital node
• Plane of the ecliptic
• Month
• Moon
• Hipparchus
• Evection
• Astrology
• Celestial mechanics
• Celestial coordinate system