1. Hubblecast 43: Hubble and Black Holes

    09:11

    from HubbleESA / Added

    372 Plays / / 0 Comments

    For centuries, scientists imagined objects so heavy and dense that their gravity might be strong enough to pull anything in - including light. They would be, quite literally, a black hole in space. But it’s only in the past few decades that astronomers have conclusively proved their existence. Today, Hubble lets scientists measure the effects of black holes, make images of their surroundings and glean fascinating insights into the evolution of our cosmos. This episode is available for download in various formats from: http://www.spacetelescope.org/videos/hubblecast43a/

    + More details
    • Timelapse sep2010 - feb2011

      04:05

      from FJAlvarez / Added

      140 Plays / / 0 Comments

      Timelapse hecho entre septiembre de 2010 y febrero de 2011. Salen algunas tormentas, como la de septiembre desde Punta y otras de diciembre desde Huelva. Los cielos estrellados son de la Picota (cerca de Berrocal). Al final hay un fragmento en el que usé la montura eq2 para darle a la cámara movimiento.

      + More details
      • Timelapse in osservatorio

        00:21

        from Alessio Caradossi / Added

        69 Plays / / 0 Comments

        Time Lapse eseguito durante alcune riprese dall'osservatorio di Frasso Sabino. Si nota lo spostamento del telescopio. Nel cielo si vedono le costellazioni dell'auriga, dei gemelli, del cancro (si nota la nebulosa M 44). Purtroppo la messa a fuoco non era perfetta.

        + More details
        • Saving Arlington's Planetarium: Our Story

          04:31

          from saveplanetarium / Added

          282 Plays / / 1 Comment

          After more than 40 years of service to both the county schools & the public, Arlington's Planetarium is in danger of closing due to budget shortfalls. Approximately $400,000 is needed to keep the facility open. A group of local supporters has formed the Friends of Arlington's Planetarium, a 501(c)(3) organization dedicated to helping raise the necessary funds. Learn more at www.saveplanetarium.org! Credits: Kathi Overton, Videographer

          + More details
          • Scattering (the Science-Portrait Series)

            10:52

            from Lightcurve Films / Added

            687 Plays / / 3 Comments

            Light scattering by small particles is a fundamental process in the atmospheres of the planets, in comets and interstellar clouds, affecting the radiative balance (amount of radiative energy going into and out) of a system. On Earth it is particularly important, as it affects the climate as a whole. In this Science-Portrait planetary scientist Olga Muñoz (Instituto de Astrofísica de Andalucía, Granada, Spain) guides us into her lab and tells about the light scattering experiment she has set up and is running together with her colleagues. See www.iaa.es/scattering for more background information on the experiment and the results (Amsterdam-Granada Light Scattering Database) The Science-Portrait Series is a series of short films about scientists and their work. This is the first in the series. Produced by Lightcurve Films © 2011

            + More details
            • Sunset

              01:00

              from Eugene Komashkov / Added

              63 Plays / / 0 Comments

              Music: All Is Violent, All Is Bright by God Is An Astronaut Filmed on Apple iPod touch 4g Edited in Sony Vegas Pro

              + More details
              • Rev. George V. Coyne, S.J., on Views of the Universe

                04:42

                from Jeff Hausman / Added

                141 Plays / / 0 Comments

                Fr. Coyne, President of the Vatican Observatory Foundation, speaks about observing the universe both as an astronomer and a religious believer.

                + More details
                • Alex Filippenko: Hearts of Darkness: Black Holes in Space

                  01:22:56

                  from Steve Croft / Added

                  594 Plays / / 0 Comments

                  Alex Filippenko presents a public talk at UC Berkeley on February 19th, 2011, as part of the Science@Cal Lecture Series described at http://scienceatcal.berkeley.edu/lectures Black holes are regions of space where gravity is so strong that nothing, not even light, can escape! No longer confined to the imaginations of science-fiction writers and theoretical physicists, black holes have recently been discovered in large numbers by observational astronomers. Learn about the remarkable properties of these bizarre objects from one of the finest explainers in the field of astronomy. Alex Filippenko is one of the world's most highly cited astronomers, and the recipient of numerous prizes for his research. He was a member of both teams that discovered the accelerating expansion of the Universe; this was named the "Top Science Breakthrough of 1998" by Science magazine, and the teams received the 2007 Gruber Cosmology Prize for their discovery. Prof. Filippenko has won the highest teaching awards at UC Berkeley, where the student body has voted him the "Best Professor" on campus six times, and he was selected as the 2006 Carnegie/CASE National Professor of the Year among doctoral institutions. Videography and editing by Chris Klein. This video is released under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License - http://creativecommons.org/licenses/by-nc-sa/3.0/us

                  + More details
                  • Triple Asteroid System (216) Kleopatra

                    00:38

                    from Franck Marchis / Added

                    320 Plays / / 0 Comments

                    Triple Asteroid System (216) Kleopatra. This movie shows the moons AlexHelios and CleoSelene orbiting the parent dog-boned shape asteroid, (216) Kleopatra, over a period of three days. The mutual orbits of the moons were estimated from W.M. Keck II Adaptive Optics observations (Descamps et al. 2011). Radar model of the primary asteroid from Ostro et al. (2000) was used. (c) F. Marchis and P. Descamps (Feb 23, 2011)

                    + More details

                    What are Tags?

                    Tags

                    Tags are keywords that describe videos. For example, a video of your Hawaiian vacation might be tagged with "Hawaii," "beach," "surfing," and "sunburn."