It's a bird! It's a plane! It's a...UFO.
Several pilots have seen bright objects move fast through the air over the Irish coast, and believed them to be UFOs.
The Irish Aviation Authority is investigating a recent incidents.
Experts do not think it was aliens, but believe it was probably dust entering the atmosphere or a meteorite.
On Friday, a British Airways pilot was completing a routine flight over the Irish coast when she saw something truly out of the ordinary.
The pilot saw an unidentified flying object "moving so fast" that she felt compelled to call the local air traffic control to see if there were military exercises in the area, according to the BBC.
The pilot, who was in the tail end of a journey from Montreal, Canada, to UK's Heathrow airport, said the occurrence was unusual.
"It came up on our left-hand side (rapidly veered) to the north, we saw a bright light and it just disappeared at a very high speed ... we were just wondering. We didn't think it was a likely collision course ... (just wondering) what it could be," she said, per CNN.
A pilot from a Virgin Flight said that he and his crew also saw "two bright lights at 11 o'clock (which) seemed to bank over to the right and then climb away at speed."
A third pilot told CNN that he saw something similar over Ireland months ago. He described having an "absolutely astronomical, like Mach 2 or something."
But experts don't think it's exactly out of this world.
Despite the multiple sightings a series of months, experts just aren't sure that the UFO is actually from another planet.
Apostolos Christou, an astronomer from the Armagh Observatory and Planetarium, told the BBC that the pilots probably saw dust entering the atmosphere, which is often mislabeled as a shooting star.
"It was most likely what are commonly called shooting stars," he said. "It appears the matter was extremely bright so it must have been quite a large piece of material. I cannot say from the pilots' description, but it could have been the size of a walnut or an apple."
Others think it could be something entirely different, though.
One pilot told CNN that the object was probably a "meteor or some kind of object re-entry appears to be multiple objects following the same sort of trajectory," which would account for the bright light.
Christou said that re-entry is pretty common in the month of November. "It also appears there were bits coming off the object and flying past the airplane, that is also what you would expect if it was a particularly large rock from space hitting the atmosphere, it would tend to fragment," he explained.
In any case, a spokesperson for the Irish Aviation Authority told the BBC that they're looking into this.
"Following reports from a small number of aircraft on Friday 9 November of unusual air activity the IAA has filed a report," they said in a statement. "This report will be investigated under the normal confidential occurrence investigation process."