For decades, the supermassive black hole at the center of the Milky Way was an invisible monster, betrayed only by…

SpaceX has added another cluster of broadband spacecraft to its growing Starlink constellation, lofting 29 satellites from Florida and extending…

Elon Musk built SpaceX into the United States’ indispensable launch provider, a company that carries astronauts, military satellites, and the…

Within a few dozen light years of the Sun, the sky is crowded with stars that could, in principle, host…

NASA has confirmed that a subtle but measurable change in how our planet reflects sunlight is under way, and it…

Far off the New England coast, one of Earth’s rarest mammals is surviving on a food source so small it…

Sen. Mark Kelly has turned a simmering dispute with the Pentagon into a full-blown constitutional fight, suing Defense Secretary Pete…

New York is moving to shut the door on one of the most volatile uses of artificial intelligence, with Gov.…

SpaceX is moving into the next phase of its national security work as the U.S. military prepares to loft a…

SpaceX’s latest Starship test has delivered the kind of spectacle that even seasoned launch watchers are replaying frame by frame:…