1. Properties of stars - space detectives


    from Sha Tin College Science / Added

    104 Plays / / 0 Comments

    Our own galaxy alone contains several billion stars so the astrophysicist is going to be very interested in all aspects of them - how are they powered, what are they made of, how long is their lifetime ? etc. On Earth we can determine the brightness (power per unit area), surface temperature and chemical composition by a range of sophisticated techniques. As "space detectives" they can then work out other properties such as luminosity (power) and distance. This video guides you through the measurements we can take on Earth and will support your learning in the IB optional topic E; Astrophysics (AST)

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    • NASA JPL - What's up for May 2012


      from Camilla Corona / Added

      43 Plays / / 0 Comments

      This months you get to see an annular eclipse. View sunspots and a solar eclipse through solar-safe 'scopes. Learn about some of the many missions studying the Sun in this segment of "NASA JPL - What's up for May 2012". Credit: NASA JPL

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      • Starlight


        from Jacob Taylor / Added

        939 Plays / / 4 Comments

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        • They're back!!! UFO Compilation by Eric Adamo


          from Eric Adamo / Added

          72 Plays / / 0 Comments

          This is a compilation of 7 out of the 9 UFO sighting I've had since July 3, 2011. I've had 15 all together in my lifetime.

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          • Urban Astrophotography PART #2


            from Texas Astronomical Society / Added

            93 Plays / / 0 Comments

            The 2nd half of the UrBan Astrophotography video by the APSIG members of the Texas Astronomical Society of Dallas. Recorded April 2012 at the General Meeting of the Society. www.texasastro.org

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            • SCALE AND DISTANCE


              from Ivo Stoop / Added

              78 Plays / / 0 Comments

              an informative film about the big solar system, narrated by Jah music is Curtains by Aphex Twin intelligible voice-over version coming soon, maybe spring 2012

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              • Sifting through Dust near Orion’s Belt (pan)


                from ESO Observatory / Added

                88 Plays / / 0 Comments

                This image of the region surrounding the reflection nebula Messier 78, just to the north of Orion’s belt, shows clouds of cosmic dust threaded through the nebula like a string of pearls. The submillimetre-wavelength observations, made with the Atacama Pathfinder Experiment (APEX) telescope and shown here in orange, use the heat glow of interstellar dust grains to show astronomers where new stars are being formed. They are overlaid on a view of the region in visible light. Credit: ESO/APEX (MPIfR/ESO/OSO)/T. Stanke et al./S. Brunier/Chris Johnson (cuttinedgeobservatory.com)/Digitized Sky Survey 2. Music: Disasterpeace (http://disasterpeace.com/) More information and download-options: http://www.eso.org/public/videos/eso1219b/

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                • 2012 Malcolm McIntosh Lecture: The Accelerating Universe


                  from Inspiring the ACT / Added

                  9 Plays / / 0 Comments

                  On 4 April, 2011 Nobel Laureate Prof Brian Schmidt delved into the history of the universe, explaining how astronomers used observations to trace our universe's history back more than 13 million years.

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                  • Origins of Life


                    from Carson McDonough / Added

                    121 Plays / / 0 Comments

                    Animation I created as a my final for the Technology, Arts, and Media Minor at University of Colorado at Boulder. Explores the origins of life and where the elements that make up the human body are manufactured.

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                    • Harmonia Macrocosmica


                      from Alicia7777777 / Added

                      285 Plays / / 3 Comments

                      Animation and music by Alicia7777777 ------- The Harmonia Macrocosmica is a star atlas written by Andreas Cellarius and published in 1660 by Johannes Janssonius. The first part of the atlas contains copper plate prints depicting the world systems of Claudius Ptolemy, Nicolaus Copernicus and Tycho Brahe. At the end are star maps of the classical and Christian constellations, the latter ones as introduced by Julius Schiller in his Coelum stellatum christianum of 1627. Because the atlas also contained plates supporting the then popular view of the Catholic Church, the book was not placed on the Index Librorum Prohibitorum. Andreas Cellarius (c. 1596, Neuhausen, -- 1665, Hoorn) was a Dutch-German cartographer, best known for his Harmonia Macrocosmica of 1660, a major star atlas, published by Johannes Janssonius in Amsterdam.

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