John Mather portrait
![John Mather portrait](https://planetary.s3.amazonaws.com/web/assets/pictures/_1200x1440_crop_center-center_82_line/john-mather.jpg 1200w, https://planetary.s3.amazonaws.com/web/assets/pictures/_768x921_crop_center-center_82_line/john-mather.jpg 768w, https://planetary.s3.amazonaws.com/web/assets/pictures/_576x691_crop_center-center_82_line/john-mather.jpg 576w)
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