 
   showSummary: ->
     @resetMarkingSurfaces() # remove previous marks
-    @removeElementsOfClass(".known-asteroid")
     
     if @Subject.current.metadata.known_asteroids.length isnt 0
       @knownAsteroidMessage.show() 

    @el.find("#frame-id-#{frame_idx}").closest("div").show()

  destroyFrames: ->
    image.remove() for image in @el.find('.frame-image')

  onClickInvert: ->
    @invert = !@invert

    @el.removeClass 'loading'

  removeElementsOfClass: (class_name) ->
    element.parentNode.removeChild(element) for element in [@el.find(class_name)...]

  evaluateAnnotations: (P_ref) ->
    xs = []
