https://www.scientificamerican.com/article/biden-administration-appoints-acting-nasa-chief/

After NASA’s chief Jim Bridenstine’s resigned yesterday (Jan. 20), President Joe Biden’s administration has appointed Steve Jurczyk to serve as acting administrator until the role is permanently filled.

Jurczyk has been the agency’s associate administrator since May 2018, according to his NASA biography; all told, he has worked at NASA since 1988. Jurczyk is one of 34 acting leaders announced by Biden and his vice president, Kamala Harris, hours after their inauguration.