SpaceX's Starlink satellites now make up 40% of reentering satellite debris. But is Elon Musk's space company the worst ...

Weather forecasters, Federal Emergency Management Agency employees, the National Guard and other U.S military personnel, state and local officials, first responders and those providing emergency ...

2 new papers trace the origin of most meteorites to just a handful of asteroid breakup events – and possibly even individual ...

Beginning of dialog window. Escape will cancel and close the window.