One centimetre-wide devices can use heat from the Sun to levitate — plus, the new experiments trying answer whether gravity ...

Design could help to probe the ‘ignorosphere’, a layer of ultra-thin air that has largely escaped exploration by balloons, ...

Between 50 and 100 kilometers (30–60 miles) above the Earth's surface lies a largely unstudied stretch of the atmosphere, ...

Neutrinos—ghostly particles that rarely interact with normal matter—are the sun's secret messengers. These particles are born ...