An artist's view of BoldlyGo's SCIM mission in which a probe would skim the Martian atmosphere capturing dust particles and returning them to Earth. BoldlyGo Institute, Inc. hide caption
A view of the Large Hadron Collider in its tunnel at CERN in Switzerland. Martial Trezzini/AP hide caption
From the Abu Simbel temples in southern Egypt, dating back to the 13th century B.C. iStockphoto hide caption
Road Through The Valley at Canyonlands National Park. Paul Giamou/iStock hide caption