American and Iranian officials are in the Gulf state, a key mediator between the two countries, days after new round of attacks threatened efforts to sign a lasting peace deal.
Exploding stars have left their radioactive mark on our planet. Now scientists have found more evidence of a particularly violent event in Earth’s more ancient past. The post Exploding Stars Sprinkled Ancient Earth With Radioactive Iron and Plutonium appeared first on Sky & Telescope.
Commercial space station developer Vast named the former president and chief executive of The Aerospace Corp. as an adviser while the company awaits the next phase of a NASA program. The post Vast names Isakowitz as a senior adviser appeared first on SpaceNews.