- This event has passed. September 1, 2019 @ 12:30 pm - 1:30 pmAsteroids and comets have collided with our planet throughout its history, changing the course of life on Earth and shaping the world we know today. Real-time data from current NASA missions help audiences explore the past, present, and future of our Solar System. Take a journey through the dynamic story of our cosmic origins. Discover what these impacts from above can teach us—and how scientific advances may allow us to find and track cosmic threats before they reach planet Earth. Narrated by George Takei. FMI: (207) 581-1341 or http://astro.umaine.edu