cosmology/ love & the afterlife cosmology/ love & the afterlife date tuesday - november 22,   leading astrophysicist and director of the hayden planetarium, neil degrasse tyson discussed the latest discoveries and research in astrophysics, and cosmology. dark matter and dark energy continue to mystify the science and physics community. 85% of the gravity in the universe has no known source, and is attributed to unmeasurable dark matter, while dark energy is a mysterious pressure in the vacuum of space, making the expansion of the universe accelerate, he explained. regarding the threat of asteroids hitting the earth, he suggested working on ways to deflect any incoming bodies, rather than mitigating the aftereffects of a disastrous collision. 




our early solar system was a turbulent place that may have had around 30 planets initially, with some colliding into each other. such a collision was how our moon was formed, when a planet sideswiped earth, he detailed. other bodies may have become "vagabond planets" and left our solar system entirely. interestingly, he noted that such runaway planets zooming through interstellar space could be more common than planets orbiting a star. he also touched on such topics as the big bang, the anomalous tabby's star, and the evolution of his documentary tv series cosmos: a spacetime odyssey , which revived the brand originally presented by carl sagan.
cosmology/ love & the afterlife
noauthor