       text: """
         One of the most common false-positives we have to deal with are eclipsing binary stars. This is when another star is transiting, rather than a planet. These tend to produce much deeper transits due to stars being much larger than planets, and they also show secondary eclipses, when the smaller star passes behind the larger star (see the diagram below). However, there a few ways in which an eclipsing binary system can mimic a transiting planet. Firstly, if the second star is only partially transiting the disc of the first star then the amount of light blocked is smaller and the depth of the transit may be similar to that caused by a planet. This is called a ‘grazing eclipsing binary’.
         """
-      figure: "missing"
+      video: '<video class="nativeEmbedPlayerPid" id="pid_mwe_player_1" src="//upload.wikimedia.org/wikipedia/commons/transcoded/9/96/201008-2a_PlanetOrbits_16x9-_Transit_timing_of_1-planet_vs_2-planet_systems.ogv/201008-2a_PlanetOrbits_16x9-_Transit_timing_of_1-planet_vs_2-planet_systems.ogv.480p.webm" autoplay="autoplay" style="width: 100%; height: 100%; z-index: 1;"></video>'
+      figure: "./images/mini-course/slide-6.jpg"
       figure_credits: ""
 
   }

      text: """
        The first planets discovered using the transit method were very strange. They were gas giant planets the same size as Jupiter but so close to their star that they only take a few days to complete one orbit! There is nothing like this in our Solar System, and theories suggest it is impossible for a Jupiter-sized planet to form in the high temperature environment that close to a star.
        """
      figure: "./images/mini-course/22-HotJupiters.png"
      figure_credits: "NASA"

  }

  {
    course_number: 23
    material:
      title: "Hot Jupiters - Migration"
      text: """
        For the Hot Jupiters to have gotten so close to their host stars they would have to have first formed much farther out where it was colder and then migrated inwards through the system. Multiple theories on how this migration occurs have been proposed, including interactions with other material orbiting the star in the early stages of the system and gravitational scattering involving other large bodies.
        """
      figure: "./images/mini-course/23-HotJupiters.png"
      figure_credits: "NASA"

  }

  {
    course_number: 24
    material:
      title: "Congratulations!"
      text: """
        <p>You have successfully completed the Planet Hunters mini-course on Exoplanetary Astrophysics! We hope you enjoyed it, and that you learned some new and interesting things about this fantastic area of research. Please continue your great work on Planet Hunters, so that together we can continue to discover more about our Universe.</p>
        <p>Remember, if you want to review the slides from the course, you can browse them form your <a href='#/profile'>profile</a> </p>
        """
      figure: ""
      figure_credits: ""

  }

        <p>The separation and extreme difference in brightness between exoplanets and their host stars makes it very difficult to image them directly. However, there are a handful of exoplanet candidates  that have been discovered this way. All of them have very large radii and lie in distant orbits.</p>
        <p>Below is an image showing the directly imaged exoplanet candidate orbiting in the debris disk around the star Formalhaut.</p>
        """
      figure: "./images/mini-course/slide-22.jpg"
      figure_credits: "NASA"

  }
