NASA’s nuclear-powered Dragonfly rotorcraft has entered its hands-on construction phase at the Johns Hopkins Applied Physics Laboratory, shifting the first interplanetary drone from blueprints to ...

A civilization capable of interstellar travel may also be one that has moved beyond conquest, excess and ecological ...

Some creators and observers say the disproportionate influence of voices outside of Iran has exacerbated deep rifts in the diaspora, which includes about 750,000 people in the United States, according ...