Spacetime With Stuart Gary

(00:00:00) Mercury's Shrinking Secrets: Insights into the Solar System's Smallest Planet (00:00:43) Mercury's Ongoing Shrinkage (00:03:11) NASA's Carruthers Geocorona Observatory (00:11:52) Insights from Martian Meteorite NWA 16254 (00:14:23) Tech News In this episode of SpaceTime, we explore the intriguing dynamics of Mercury's shrinking size, embark on a mission to unveil Earth's elusive exosphere, and uncover the secrets of ancient volcanic activity on Mars.Mercury's Ongoing ShrinkageRecent research published in AGU Advances reveals that Mercury continues to shrink as it cools, a process that has been ongoing since its formation 4.6 billion years ago. Scientists have estimated that the planet's radius has contracted by between 2.7 to 5.6 kilometres due to cooling-induced faulting. This study employs new methods to provide a more accurate understanding of Mercury's long-term thermal history, which could also be applied to other planetary bodies, including Mars.NASA's Carruthers Geocorona ObservatoryNASA ha