The Chang'e-4 lunar lander touched down on the far side of the Moon on 3 January 2019, with a German instrument for measuring space radiation on board. Since then, the Lunar Lander Neutron and Dosimetry (LND) instrument has been measuring temporally resolved cosmic radiation for the first time. Earlier devices could only record the entire 'mission dose.'
MTA Board of Directors Welcomes Lydia So By Stephen Chun Lydia So, a championed public servant, advocate for the AAPI community and an accomplished urban planner, designer and architect, has joined the SFMTA’s Board of Directors. She was appointed in June 2023 and sworn in by Mayor London Breed on Aug. 23, 2023, at Central Subway’s Chinatown Rose Pak Station, in line with her personal connection with the Chinatown community. So was born in Hong Kong and is fluent in Chinese (Cantonese). She is the founder of the architecture firm SOLYD Architecture, Management and Design. She is a former Historic Preservation Commissioner for the San Francisco Planning Department where she voted in favor of the Potrero Yard Modernization Project that is expected to bring hundreds of housing units to our city while maintaining the functions of the SFMTA. She was the first Chinese American Historic Preservation Commissioner, implemented the Planning Department’s Racial and Social Equity policy and
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