Get the latest update on Comet 3I/ATLAS as it makes a close approach today, including what it means and why skywatchers are ...

In advance of President Donald Trump’s upcoming visit to South Korea later this month—where he is expected to meet Chinese President Xi Jinping for the first time since 2019—China announced that it ...

For decades, geologists labeled a billion-year stretch of Earth’s history—from 1.8 to 0.8 billion years ago—as the “Boring Billion.” They assumed not much occurred during the time: mountain building ...