WFIRST
Culberson
Hitomi / ASTRO-H
Zurbuchen
IXPE
WFIRST
Hitomi / ASTRO-H
Kepler
NASA Astrophysics Director Paul Hertz (middle) shown during a briefing at NASA headquarters in April 2015. Credit: NASA/Joel Kowsky
WFIRST
In this  ESA image, taken with an ultra-wide angle fisheye lens Nov. 19, the LISA Pathfinder spacecraft is hidden from view, encapsulated in the upper stage of its Vega rocket.
NASA Astrophysics Director Paul Hertz (middle) shown during a briefing at NASA headquarters in April 2015. Credit: NASA/Joel Kowsky
The Nuclear Spectroscopic Telescope Array (NuSTAR), launched in 2012, is an Explorer mission that allows astronomers to study the universe in high energy X-rays. (NASA/JPL-Caltech artist's concept)
WFIRST
WFIRST
Stratospheric Observatory for Infrared Astronomy. Credit: NASA/Carla Thomas

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