NASA Science Mission Directorate Associate Administrator Thomas Zurbuchen presents research findings during a TRAPPIST-1 planets briefing at the NASA Headquarters February 22, 2017 in Washington, DC. Researchers revealed the first known system of seven Earth-size planets around a single star called TRAPPIST-1.

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NASA Science Mission Directorate Associate Administrator Thomas Zurbuchen presents research findings during a TRAPPIST-1 planets briefing at the NASA Headquarters February 22, 2017 in Washington, DC. Researchers revealed the first known system of seven Earth-size planets around a single star called TRAPPIST-1.

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Location: Washington, DC
Photo credit: © NASA Photo / Alamy / Afripics
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