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“WFIRST and Webb are as similar to each other as the Malibu that I drive and the Ferrari my neighbor drives. They’re both cars, but they’re really different classes of both cost and complexity.” Thomas Zurbuchen,  NASA associate administrator for science. Credit: NASA/Aubrey Gemignani
After much tinkering, Northrop Grumman Aerospace Systems has at last finished the cryogenic cooler that will keep JWST's Mid-Infrared Instrument at its frosty-cool operating temperature of minus 270 Celsius. Credit: NASA artist's concept
Swift spacecraft
WFIRST
TESS illustration
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

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