Hydrogen

This Alien Landscape is Actually a Microscopic View of an Atomic Clock

Navigation satellites couldn't accomplish anything without extremely accurate clocks. But a regular clock won't do. Only atomic clocks are accurate…

3 months ago

Could Life Exist in Molecular Clouds?

Our search for life beyond Earth is still in its infancy. We're focused on Mars and, to a lesser extent,…

5 months ago

JWST Reveals a Newly-Forming Double Protostar

As our newest, most perceptive eye on the ongoing unfolding of the cosmos, the James Webb Space Telescope is revealing…

5 months ago

Astronomers Have Been Watching a Supernova’s Debris Cloud Expand for Decades with Hubble

Twenty thousand years ago, a star in the constellation Cygnus went supernova. Like all supernovae, the explosion released a staggering…

6 months ago

Early Life on Mars Might Have Wiped Out Life on Mars

Life might have wiped itself out on early Mars. That's not as absurd as it sounds; that's sort of what…

1 year ago

Water was Already Here Before the Earth Formed

Where did Earth's water come from? That's one of the most compelling questions in the ongoing effort to understand life's…

2 years ago

A Mars Colony Could be a Hydrogen Factory, Providing Propellant for the Inner Solar System

There are lots of potential uses for a Mars colony.  It could be a research outpost, mining colony, or even…

2 years ago

White Dwarfs can Continue Burning Hydrogen, Even After They’re Dead

White dwarfs are supposed to be dead remnants of stars, doomed to simply fade away into the background. But new…

3 years ago

Worlds With Hydrogen in Their Atmospheres Could Be the Perfect Place to Search for Life

We're waiting patiently for telescopes like the James Webb Space Telescope to see first light, and one of the reasons…

4 years ago

Astronomy Cast Ep. 513: Stellar Fusion

The Sun. It's a big ball of fire, right? Apparently not. In fact, what's going on inside of the Sun…

5 years ago