Something from “space” may have just struck a United Airlines flight over Utah

“NTSB gathering radar, weather, flight recorder data.”

The National Transportation Safety Board confirmed Sunday that it is investigating an airliner that was struck by an object in its windscreen, mid-flight, over Utah.

“NTSB gathering radar, weather, flight recorder data,” the federal agency said on the social media site X. “Windscreen being sent to NTSB laboratories for examination.”

The strike occurred Thursday, during a United Airlines flight from Denver to Los Angeles. Images shared on social media showed that one of the two large windows at the front of a 737 MAX aircraft was significantly cracked. Related images also reveal a pilot’s arm that has been cut multiple times by what appear to be small shards of glass.

Object’s origin not confirmed

The captain of the flight reportedly described the object that hit the plane as “space debris.” This has not been confirmed, however.

After the impact, the aircraft safely landed at Salt Lake City International Airport after being diverted.

Images of the strike showed that an object made a forceful impact near the upper right part of the window, showing damage to the metal frame. Because aircraft windows are multiple layers thick, with laminate in between, the window pane did not shatter completely. The aircraft was flying above 30,000 feet—likely around 36,000 feet—and the cockpit apparently maintained its cabin pressure.

So was it space debris? It is impossible to know without more data. A very few species of birds can fly above 30,000 feet. However, the world’s highest flying bird, Rüppell’s vulture, is found mainly in Africa. An unregulated weather balloon is also a possibility, although it’s not clear whether the velocity would have been high enough to cause the kind of damage observed. Hail is also a potential culprit.

Assuming this was not a Shohei Ohtani home run ball, the only other potential cause of the damage is an object from space.

That was the initial conclusion of the pilot, but a meteor is more likely than space debris. Estimates vary, but a recent study in the journal Geology found that about 17,000 meteorites strike Earth in a given year. That is at least an order of magnitude greater than the amount of human-made space debris that survives reentry through Earth’s atmosphere.

A careful analysis of the glass and metal impacted by the object should be able to reveal its origin.

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Posted Monday 20 October 2025 at 12:13 pm AEST (my time).

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