The next leader of NASAโ€™s Science Mission Directorate is an astrophysicist and astronaut who flew three space shuttle missions to work on the Hubble Space Telescope, the journal Nature reports.

Citing โ€œseveral sources with knowledge of the selection,โ€ Nature says John Grunsfeld, deputy director of the Space Telescope Science Institute in Baltimore, has been tapped to replace Ed Weiler as NASA associate administrator for science.

Grunsfeldโ€™s attributes include his unusual experience as a scientist who has both touched Hubble and used data from it; his knowledge of NASA bureaucracy from serving as an adviser to the agencyโ€™s chief scientist from 2003 to 2004; and his management of 500 employees at the Space Telescope Science Institute since 2009.

But Nature quotes one scientist as saying NASA-funded scientists who work outside astronomy โ€” in Earth science, planetary science and heliophysics โ€” could question his leadership: โ€œHis entire reputation is based on fixing space telescopes. I think it will be a real tough slog for him.โ€

READ IT AT: [Nature]