This adjective names the unexpectedly large amount of RNA transcribed from outside exons. Spolyar et al. proposed a type of early universe star named for this adjective powered by annihilation and up to 2000 AU in diameter. John Michell earlier proposed a star named for this adjective in Newtonian mechanics with an extremely high escape velocity. This adjective names a type of biodiversity encompassing species that are absent from a research site but present in the surrounding community. Kashlinsky et al. observed a non-random flow named for this adjective affecting galaxy cluster motion. Vacuum energy could explain this adjective's namesake energy, which makes up 68 percent of the universe's (10[1])density and is accelerating its expansion. For 10 points, what adjective also names a type of invisible but gravitationally attractive matter? ■END■