A startup established three years ago to churn out a new class of high-power satellites has raised $250 million to ramp up ...

The closer to Earth a satellite flies, the clearer a picture it can take of the surface. But low-flying satellites also have ...

U.S. and Chinese satellites routinely spy on each other in orbit, rehearsing for more aggressive operations in the event of ...

Daily life increasingly depends on systems of satellites orbiting Earth. As fleets proliferate, ever greater numbers of expired units will hurtle back toward the surface. Decommissioned satellites ...

When you think of satellites, you probably think of those big finned boxes bouncing cellular signals out in orbit. They're certainly not the kind of thing you would consider a "vehicle," but it is a ...

SpaceX’s Starlink orbital internet satellites are falling out of low Earth orbit at an increasingly alarming rate, with one to two satellites now reentering Earth’s atmosphere every single day.

PRESTON, United Kingdom — China launched a new batch of Guowang broadband satellites late Monday, continuing a flurry of missions to build a national low Earth orbit communications megaconstellation.

Two years ago, communities across Northwest Alaska woke to find that they had no internet or cellphone service. A mammoth piece of arctic sea ice had scraped the ocean floor 34 miles north of Oliktok ...

An aurora seen from the ISS. Geomagnetic storms that create auroral displays can also affect satellite orbits and, with them, collision avoidance efforts. Credit: NASA WASHINGTON — A pair of major ...