Core electron bonding may not always require extreme pressure, study finds

You probably learned in high school chemistry class that core electrons don't participate in chemical bonding.

Portal Space Systems brings its solar thermal propulsion system up to full power during test

Portal Space Systems says it has successfully tested its solar thermal propulsion system at operational temperatures inside a ...
MIT Technology Review

Scientists can see Earth’s permafrost thawing from space

New ways to measure thawing permafrost could help us understand its potential impacts on infrastructure, military outposts, ...