Space

50 years ago, satellites threatened astronomers' v...

Satellites interfere with radio astronomy – Scientific news, October 5, 1974 In the past, satellites and probes launched by NASA and others successfully avoided conflict with the radio frequency bands reserved for radio astronomy. But now there is trouble. The […]

Physics

X-rays from nuclear explosions can protect Earth f...

An asteroid heading toward Earth can be deflected without ever touching a spacecraft. The trick is to use X-rays to deflect the space rock, researchers report Sept. 23 Nature Physics. In laboratory experiments, scientists heated the surfaces of free-falling artificial […]

Physics

Storms ignite a 'boiling pot' of gamma rays

Above the cloud tops, storms blow with a complex and frenetic light show of high-energy radiation. A view from a refurbished spy plane flying 20 kilometers up revealed storms glowing and flickering in gamma rays, high-energy light invisible to the […]

Physics

Discovery of key machine learning tools wins 2024 ...

As artificial intelligence explodes in popularity, two of its pioneers have been awarded the 2024 Nobel Prize in Physics. The award goes to John Hopfield and Geoffrey Hinton “for fundamental discoveries and inventions enabling machine learning with artificial neural networks,” […]

Genetics

What causes rivers to suddenly change course?

Displacement is in the nature of a river. But when a river breaks from its channel and carves a new path across the landscape, devastating floods can descend on communities with little or no warning. For decades, researchers have struggled […]