![Brian Duffy, a former astronaut and now with Lockheed Martin, speaks to Design Challege student teams during Space Day at the Smithsonian's National...](https://media.gettyimages.com/id/99608407/photo/united-states-brian-duffy-a-former-astronaut-and-now-with-lockheed-martin-speaks-to-design.jpg?s=612x612&w=gi&k=20&c=13u9Bfhx1DLBkb2AncZ0IU2xGmOK7Fq9tWPBVKJrNK4=)
186 Challege Stock Photos and High-res Pictures
Browse 186 challege photos and images available, or search for challenge to find more great photos and pictures.
![Brian Duffy, a former astronaut and now with Lockheed Martin, speaks to Design Challege student teams during Space Day at the Smithsonian's National...](https://media.gettyimages.com/id/99608407/photo/united-states-brian-duffy-a-former-astronaut-and-now-with-lockheed-martin-speaks-to-design.jpg?s=612x612&w=gi&k=20&c=13u9Bfhx1DLBkb2AncZ0IU2xGmOK7Fq9tWPBVKJrNK4=)
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Browse 186 challege photos and images available, or search for challenge to find more great photos and pictures.