6 exquisite images from Close-up Photographer of the Year

The Space Shuttle was designed in the hopes that spacefaring would become cheap, reliable and everyday. Instead, maintaining the fleet took months of arduous technical work and instead of flying once a week, the shuttle made on average fewer than five flights a year

2,000-year-old 'celestial calendar' discovered in ancient Chinese tomb

The “Dolomite Problem” – Scientists Resolve 200-Year-Old Geology Mystery