{"type":"rich","version":"1.0","title":"Formation of a Black Hole.","description":"Activity where students order the stages of a massive star's life cycle, including stellar nebula, protostar, massive star, red supergiant, supernova, and black hole or neutron star.","author_name":"Padlet TA","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1767922016579&hashid=ZRKMyb54KA","html":"<iframe src=\"https://arcade.padlet.com/embed/ZRKMyb54KA\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","width":720,"height":480,"provider_name":"Padlet Arcade","provider_url":"https://arcade.padlet.com"}