Researchers now say the world may be only 5.5 days away from a serious satellite collision at any given moment, a warning that turns an abstract orbital risk into a near-term countdown. The concern is ...

Low-Earth orbit is more crowded—and fragile—than it looks. Satellites constantly weave past each other, burning fuel and ...

From cosmic collisions to which planet would make the worst roommate, no topic is out of orbit when it comes to Dr. Neil ...

Now, using the world's largest radio telescope project, the Atacama Large Millimeter/submillimeter Array ( ALMA ), ...

NTSB human performance investigator Katherine Wilson said an air traffic controller felt a “little overwhelmed” when traffic ...

Two days shy of the one-year anniversary of a tragedy that killed 67 people near the nation’s capital, the National Transportation Safety Board is presenting its findings in the investigation and new ...

Astronomers watched a distant star dim for months and found a metal-rich cloud that may be the aftermath of a massive ...

Astrophysicists are warning that low Earth orbit is reaching a critical tipping point, where satellite collisions could happen faster than previously imagined. A new metric, the ...

A distant Sun-like star suddenly went dark for months, stunning astronomers who quickly realized something massive was ...

Skygazers who look up at the moon tonight may be able to spot Saturn below it. Here's when and how to spot the conjunction.

"Until now, it was unknown what type of star would remain after the merger." ...