1. ScienceCasts: Handprints on Hubble

    04:55

    from Science@NASA Added 415 3 0

    Visit http://science.nasa.gov/ for more. As the Hubble Space Telescope celebrates its 25th anniversary, scientists are reflecting on the key role astronauts played in allowing the telescope to…

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    • How Do We Know Dark Energy Exists?

      05:06

      from Fraser Cain Added 10 0 0

      We have no idea what it dark energy is, so how are we pretty sure it exists?

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      • How will the Universe end?

        03:38

        from Royal Observatory Greenwich Added 2,631 16 0

        Our Universe began 13.8 billion years ago and it has been expanding ever since. Is it destined to expand forever or will it suffer a more crushing end? Astronomers at the Royal Observatory Greenwich…

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        • Mario Livio - Q11

          01:48

          from Nautilus Added 117 0 0

          How has the prospect of completely decommissioning Hubble affected you?

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          • Mario Livio - Q10

            05:45

            from Nautilus Added 110 1 0

            What does this ability to see so far into the universe mean for the discovery of other habitable planets?

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            • Mario Livio - Q9

              01:51

              from Nautilus Added 135 0 0

              Hubble has the ability to look very deep into the universe. What do Hubble deep fields show?

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              • Mario Livio - Q8

                02:16

                from Nautilus Added 130 1 0

                What has Hubble discovered about black holes?

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                • Mario Livio - Q7

                  04:29

                  from Nautilus Added 147 0 0

                  What is dark matter?

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                  • Mario Livio - Q6

                    01:55

                    from Nautilus Added 124 0 0

                    What will dark energy do to our universe?

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                    • Mario Livio - Q5

                      01:10

                      from Nautilus Added 184 2 0

                      What is dark energy?

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