• While we don't have custom keyboard shortcuts for Zooniverse projects, the standard shortcuts for navigating any page or application work: 
  • Tab/shift+Tab to navigate forward and backward through the page (and through forms); Enter/Space to activate buttons and links; cursor keys to select items from menus. 
• A full list of keyboard support for all major web browsers is maintained by WebAIM: https://webaim.org/techniques/keyboard/#testing