Spacetime With Stuart Gary

SpaceTime Series 28 Episode 24The Astronomy, Space and Science News PodcastAsteroid Impact Odds, Lunar Grand Canyons, and NASA's Stranded AstronautsIn this episode of SpaceTime, we discuss the alarming increase in the odds of asteroid 2024 YR4 impacting Earth, now estimated at 3.1% for December 22, 2032. This asteroid, measuring between 40 to 90 meters, poses a significant threat, and we delve into the implications of planetary defense strategies that could be employed to mitigate this risk.The Origins of the Moon's Grand CanyonsWe also explore new research that suggests the Moon's massive canyons, Vallis Schrodinger and Valles Plank, were carved out by asteroid impacts in a mere 10 minutes. This groundbreaking study provides insights into the Moon's geological history and will have important implications for future lunar missions, particularly the upcoming Artemis program.NASA's Stranded AstronautsAdditionally, we cover the latest developments regarding NASA astronauts Sunita Williams and Butch Wiltmore, who