Tech

Metals from space descend on Boulder, Colorado, at dusk and dawn

Enlarge / Morning sun against the foothills of Boulder, Colorado, business area and campus. (credit: Fred Langer Photography | Getty Images) Every day, the Sun rises and sets on Boulder, Colorado. And, like clockwork, a layer of sodium and other elements trickle down through the sky and hit the ground, a team of researchers at […]

Tech

Researchers think a planet lost its original atmosphere, built a new one

Enlarge / Artist’s conception of the Earth-sized planet and its atmosphere. (credit: NASA, ESA, and R. Hurt (IPAC/Caltech)) The atmosphere most planets start with is often not the same as the one they end up with. Most of the gas present at the formation of a solar system will be hydrogen and helium. But a […]