Along with sayings based on the gospels and on known Gnostic traditions, Thomas provides some highly mysterious materials which reflect his theology. (religion-online.org)
We have no idea what's causing this gravity, though — we haven't directly detected the theorized particles that make up this mysterious material that doesn't seem to interact (other than gravitationally) with normal matter like light and the particles that we know and love, which is what makes it invisible, and therefore «dark» to most instruments normally used to understand our universe. (businessinsider.com)
«If it's just salt from the ocean below, that would be a simple and elegant solution for what the dark, mysterious material is,» said research lead Kevin Hand, a planetary scientist at NASA's Jet Propulsion Laboratory in Pasadena, California. (sciencedaily.com)