Navigation satellites couldn't accomplish anything without extremely accurate clocks. But a regular clock won't do. Only atomic clocks are accurate…
Our search for life beyond Earth is still in its infancy. We're focused on Mars and, to a lesser extent,…
As our newest, most perceptive eye on the ongoing unfolding of the cosmos, the James Webb Space Telescope is revealing…
Twenty thousand years ago, a star in the constellation Cygnus went supernova. Like all supernovae, the explosion released a staggering…
Life might have wiped itself out on early Mars. That's not as absurd as it sounds; that's sort of what…
Where did Earth's water come from? That's one of the most compelling questions in the ongoing effort to understand life's…
There are lots of potential uses for a Mars colony. It could be a research outpost, mining colony, or even…
White dwarfs are supposed to be dead remnants of stars, doomed to simply fade away into the background. But new…
We're waiting patiently for telescopes like the James Webb Space Telescope to see first light, and one of the reasons…
The Sun. It's a big ball of fire, right? Apparently not. In fact, what's going on inside of the Sun…