Astronauts and Robots 2015: Neil Gehrels, NASA
Planetary Nebulae beyond the Milky Way – historical overview M. J. Barlow Dept. of Physics & Astronomy University College London.
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Astrophysics Focused Telescope Assets (AFTA )
Astrophysics Focused Telescope Assets (AFTA) Presentation to P. Hertz April 19, 2013 Neil Gehrels (GSFC) SDT Co-Chair David Spergel (Princeton) SDT Co-Chair.
