1. About Time, Space and Water

    13:02

    from Lightcurve Films / Added

    133 Plays / / 0 Comments

    "About Time, Space and Water" is one of a series of educational videos about astronomy. Dr. Alain Doressoundiram, planetary scientist at the Paris Observatory, explains about water in the Universe. See all videos in the series at https://vimeo.com/album/2398838. For the original videos in french and additional educational resources (in french), please visit http://ufe.obspm.fr/-Astronomie-Astrophysique-en-videos- Video produced by the Paris Observatory (http://www.obspm.fr/) with the support of UNISCIEL (www.unisciel.fr) and UVED (www.uved.fr).

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    • Above The Mysterious Fog Over the Milky Way

      02:57

      from Deep Astronomy / Added

      5,757 Plays / / 0 Comments

      On November 9th, 2010, a group of scientists at NASA's Fermi Gamma-Ray Space Telescope announced the discovery of two bubbles of energy erupting from the center of our galaxy. The structure spans more than half of the visible sky, from the constellation Virgo to the constellation Grus, and it may be have been around for millions of years. These bubbles extend 25,000 light years from each side of our galaxy and contain the energy equivalent of 100,000 supernovae.

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      • A Breathtaking View of the Milky Way from La Palma

        01:55

        from Randy Hoffmann / Added

        2,784 Plays / / 8 Comments

        This short film is my first attempt at celestial / Milky Way photography and consists of four time-lapse sequences, two shot per night. Sky conditions were favourable with no moon and minimal turbulence. The only drawback was the orange glow near the horizon in the direction of the Caldera caused by the Calima phenomenon. Weather conditions were tolerable with light winds and cool temperatures. The view of the Milky Way was breathtaking. The growing intensity of the Perseid Meteor Shower as seen especially in the fourth sequence near morning twilight was certainly a treat. Shooting these celestial timelapses took a lot of planning and patience. Our La Palma album: https://vimeo.com/album/2498182 GTC tour: https://vimeo.com/73063516 Equipment: Canon 550d Sigma 10mm f/2.8 fish-eye lens Pocketslider dolly (Pocketslider.de) Hahnel Giga T2 Pro intervalometer Music: "Love and Loss" by Two Steps from Hell. The Island of La Palma is beautiful in all aspects. It's a great place to hike and perfect for viewing and photographing the heavens. The night skies are protected from light, radio and air traffic pollution according to the "Sky Act" (http://www.starlight2007.net/pdf/SLeng.pdf)

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        • A Brief Tour of the Universe

          04:30

          from Scott Ferguson / Added

          225 Plays / / 1 Comment

          A compilation of various objects recorded with a modified Samsung SDC-435 and 8" LX200 Classic Schmidt-Cassegrain Telescope.

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          • Acadia in Twilight

            00:43

            from Babak Tafreshi / Added

            203 Plays / / 0 Comments

            Timelapse motion of Evening twilight at Acadia National Park, Maine, northeastern United States. A cruise ship in the Frenchman Bay near the Porcupine Islands and the town of Bar Harbor is sailing to the Atlantic Ocean. The footage is available to license, in high quality full HD1080p (and 2k or 4k). Babak Tafreshi (btafreshi@twanight.org).

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            • Acadia National Park Moonrise

              00:16

              from Christopher Georgia / Added

              211 Plays / / 1 Comment

              6 hour time lapse from dark skies into moonrise captured on a 6ft. motion dolly passing through a piece of drift wood.

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              • Accelerating Universe - Adam Riess, John Hopkins University and Space Telescope Science Institute

                28:40

                from Kavli Frontiers of Science / Added

                83 Plays / / 0 Comments

                Seeing Dark Energy Adam Riess, John Hopkins University and Space Telescope Science Institute What is dark energy? Dark energy is believed to be a component of the Universe whose repulsive gravity is presently accelerating the expansion of the Universe. Although it comprises the bulk of the mass-energy of the Universe, its nature is not well understood. Albert Einstein originally suggested its existence about 80 years ago. What is a supernova, and why is it an important tool in gauging the universe’s behavior? A supernova is the explosive death of a star, which unleashes a burst of light through the cosmos. These violent deaths occur once every 100 years in a typical spiral galaxy like our Milky Way. Some astronomers call some types of supernovas nature’s “60-watt light bulbs” because they burn at nearly the same brightness. By measuring their predictable light output, astronomers can estimate how far they are from Earth. Many of them are billions of years away. But supernovas blaze so brightly that they can be seen far across space. That’s why some astronomers also call them “cosmic mile markers”: their light provides important information about the universe’s behavior. Supernovas illuminate the dark corners of space, allowing astronomers to map the history of the universe’s expansion. How was the discovery of dark energy made? Two teams of scientists measured about 100 supernovae to gauge changes in the expansion rate. They expected to find the expansion rate to be slowing down, but were stunned to find it speeding up! Link: http://www-int.stsci.edu/~ariess/index.htm

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                • Accelerating Universe - Rachel Bean, Cornell University

                  19:16

                  from Kavli Frontiers of Science / Added

                  62 Plays / / 0 Comments

                  Accelerating Universe Rachel Bean, Cornell University The last decade has seen dramatic improvements in our understanding of the universe, with cosmological observations allowing us to test Einstein's theory of gravity, General Relativity, which relates the matter content of the universe to how the universe's size evolves. Recent observations have shown that the universe's current behavior is extremely puzzling, rather than its expansion slowing as Einstein's theory predicts, it appears to be speeding up. We introduce the cosmological model that observations are investigating, and discuss how recent observations have presented fundamental challenges to our understanding of gravity and particle physics.

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                  • Accelerating Universe - Sean Carroll, California Institute of Technology

                    28:48

                    from Kavli Frontiers of Science / Added

                    173 Plays / / 0 Comments

                    The Accelerating Universe: Enigmas and Nostrums. Sean Carroll, California Institute of Technology The universe is accelerating, and we don't know why. The simplest possibility goes back to Einstein: the possibility of a cosmological constant, or "vacuum energy." This is simply the idea that empty space itself has an inherent energy density, which remains absolutely constant throughout space and time. It's an idea that fits the data, but introduces a number of fine-tuning problems, which encourage cosmologists to look further. Another possibility is dynamical dark energy -- a source which is almost constant, but not quite, through space and time. Finally, we have the possibility that there isn't any new energy source of any kind; rather, our accepted notions of how gravity works (Einstein's general relativity) break down on cosmological scales. All of these ideas have their advantages and their drawbacks; the good news is that they make different predictions for cosmological observables. The next generation of experiments should go a long way towards pinning down the reason why the universe is accelerating.

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                    • Accross the Universe

                      04:11

                      from Rafael Brom / Added

                      1 Play / / 0 Comments

                      Eye hath not seen, nor ear heard, neither have entered into the heart of man, the things which God hath prepared for them that love him. - 1 Corinthians 2:9 Rafael Brom Record Albums on iTunes: https://itunes.apple.com/us/artist/rafael-brom/id152962016 Albums of Rafael Brom on Amazon.com http://www.amazon.com/Rafael-Brom/e/B001LHBFBY/works/ref=ntt_mus_teaser? Artist Overview of Rafael Brom on Amazon.com http://www.amazon.com/Rafael-Brom/e/B001LHBFBY/ref=ep_artist_tab_glance The Best of Rafael Brom - Volume IV on marianland.com http://www.marianland.com/music/bestofrafaelvolume4.html Rafael Brom Official Website http://www.rafaelbrom.com/ Cosmotone Music (ASCAP) http://www.cosmotonemusic.com/ Cosmotone Records http://www.cosmotonerecords.com/

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