<p>Dr. Nancy Grace Roman, NASA's first Chief of Astronomy, talks with Nobel laureate Dr. John Mather at a luncheon on March 31, 2017, at NASA's Goddard Space Flight Center in Greenbelt, Maryland.
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Credit: NASA/GSFC/Jim Jeletic
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/144614754@N02">NASA Hubble Space Telescope</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/nasahubble/42081744642/">Nancy Grace Roman with John Mather</a>