NASA’s Psyche spacecraft, currently nearly 150 million miles from Earth en route to an unexplored metal asteroid, has halted its engine operations after detecting an issue in its propulsion system. The spacecraft shut off its plasma thrusters earlier this month due to a decrease in fuel pressure, which was identified on April 1 in the line supplying xenon fuel to its thrusters. NASA’s engineers are actively investigating the cause of this fuel pressure drop, as communicated in a recent update shared by NASA science chief Nicky Fox.
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Top CDC COVID vaccine expert resigns after RFK Jr. unilaterally restricts access
A top CDC expert, Lakshmi Panagiotakopoulos, resigned Tuesday amid controversy following health secretary Robert F. Kennedy Jr.'s unilateral changes to COVID-19 vaccine recommendations, which limited access for children and pregnant individuals. Panagiotakopoulos, a pediatric infectious disease specialist and co-leader of the CDC's working group on COVID-19 vaccines, informed her colleagues via email. Her resignation precedes a scheduled meeting of CDC experts to evaluate vaccine data, a process disrupted by Kennedy's recent actions. Full Article
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