20 years after discovering that the universe is expanding with increasing speed, scientists still argue about whether dark energy explains it. Keith Cooper explores the debate
Aircraft play an important role in searching for submarines in the ocean depths. Jason Furlong and John Ryder describe how physics helps them hunt the unseen enemy
With private companies turning their attention to the riches of asteroids, the first trillionaire could be made in space. Andrew Glester explores the challenges of mining space rocks
From the furnace of take-off to the cold radiation-laden environment of space, extraterrestrial missions place high requirements on material properties
As innovations in 3D bioprinting begin to impact the commercial and clinical worlds, Margaret Harris explains how these advances could prove significant