A star thousands of times larger than the Sun just underwent a dramatic transformation that's a prelude to catastrophe.

A NASA animation has sized the biggest black holes known to scientists, including one that has the mass of 66 billion Suns.

Imagine handing the nuclear launch codes to the world’s most advanced artificial intelligence. You’d hope the machine would ...

Scientists have long seen a puzzling pattern in tokamaks, the doughnut-shaped machines that could one day reliably generate electricity from fusing atoms. When plasma particles escape the core of the ...

NATO would strike deep inside Russia if Vladimir Putin dares to invade the Baltic states, Estonia’s foreign minister has warned. Margus Tsahkna vowed any Russian aggression would be met with ...

The curious minds at What If investigate the catastrophic scenario of the sun exploding, revealing how life on Earth and the very fabric of our solar system would be instantly and drastically ...

A rapidly growing sunspot has fired off at least 18 M-class and three X-class flares in just 24 hours, including an intense X8.3 eruption. When you purchase through links on our site, we may earn an ...

Puffed-up Sun. Data from inside the Sun’s corona — the outermost layer of its atmosphere — helped astrophysicists to create a sharper picture of the Sun’s shifting boundaries than ever before. The ...

Bitterly cold arctic air has blanketed parts of the United States over the last week, with some areas getting snow and subzero temperatures. Along with the cold weather comes a natural event called ...

If you’ve been online lately, you may have seen alarming headlines claiming that “exploding trees” are waking people up across the country. The reports describe a loud bang in the middle of the night, ...

Severe cold temperatures hitting much of the country this week could branch out − literally. As people brace for the winter weather, some social media posts in recent days have warned of the chance of ...