Cars' engines have to resist tremendous pressure and heat up to 3,000 degrees. So what in the world is a soft, explosive metal doing in their exhaust valves?

A stunning new Hubble image reveals the most detailed look yet at the Egg Nebula, the youngest and closest pre-planetary nebula to Earth.

"The jury remains out on whether the June 2020 event was a nuclear test or not. What is certain is that we are in a time of nuclear uncertainty and it will continue for some time," Lori Dengler writes ...

Grounded until at least April, NASA’s giant moon rocket is headed back to the hangar this week for more repairs before astronauts climb aboard. The space agency said ...

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