The X-37B Orbital Test Vehicle after landing at NASA’s Kennedy Space Center in Oct. 2019. Credit: Air Force From time to time, the U.S. military shows glimpses of its X-37B spaceplane, which can ...

When we think of asteroids, we think of the big one that changed the Earth’s climate, and killed off the dinosaurs. But the ...

The rarest view in humanity — Earth from afar — moves many of the lucky few observers to tears and gives them a new appreciation of that blue marble we all call home. When astronauts return from space ...

When the U.S. National Oceanic and Atmospheric Administration's (NOAA) weather satellite GOES-19 turns its gaze toward the sun, scientists don't expect to see our home planet. But there it was ...