Stars like the Sun are remarkably constant. They vary in brightness by only 0.1% over years and decades, thanks to the fusion of hydrogen into helium that powers them. This process will keep the Sun ...

A new explanation for the solar system's radioactive elements suggests Earth-like planets might be found orbiting up to 50 per cent of sun-like stars ...

How is lightning initiated in thunderclouds? This is difficult to answer – how do you measure electric fields inside large, dangerously charged clouds? It was discovered, more or less by coincidence, ...

Stars like the sun are remarkably constant. They vary in brightness by only 0.1 percent over years and decades, thanks to the fusion of hydrogen into helium that powers them. This process will keep ...

Imagine that the Sun is on the verge of exploding. Or that a planet-killing asteroid is headed our way. Or maybe you just ...

Sudden and violent explosions have been leaving behind massive craters in the permafrost of Siberia — some nearly 70 feet wide and over 170 feet deep. The phenomenon has puzzled scientists since the ...

When massive stars die, they sometimes go supernova – exploding in incredible bursts of energy. Scientists haven’t spotted one in our own galaxy since 1604, and that explosion happened about 20,000 ...

An incredible new video taken by a NASA astronaut living aboard the International Space Station shows an epic explosion over Earth. But it’s not warfare or any other man-made horror that created the ...