Hundreds of unidentified anomalous phenomena (UAP) sightings are reported every year - many of which go unreported in the news or are ultimately explained.

In a notable recent case from 2004 that was caught on video, two US Navy fighter pilots filmed a round object hovering above the water about 100 miles (160 km) out into the Pacific Ocean.

Two other videos filmed in 2015 show objects moving through the air, one of which was spinning.

In one, a pilot is heard saying: "Look at that thing, dude! It's rotating!"

The Pentagon has maintained that these instances remain unexplained.

In another incident in early 2021, an American Airlines pilot flying between the US cities of Cincinnati and Phoenix reported a “long cylindrical object that almost looked like a cruise missile” moving at high speeds.

Air traffic controllers later confirmed that no other aircraft were reported in the area and that it is unsure what the object was.

A similar incident in 2018 was reported nearly simultaneously by an American Airlines plane and private jet.

Jamie Whitehead
Live reporter

Do aliens exist? It’s a question that’s been asked by millions of people for thousands of years. Are we about to get a bit closer to the answer?

Maybe.

Last year Nasa set up a panel to look at unidentified anomalous phenomena, which it defies as "observations of events in the sky that cannot be identified as aircraft or known natural phenomena from a scientific perspective”.

Today, they are holding the first ever public meeting for final deliberations on their findings before their report is released later in the year.

Stay with our teams in Washington, DC and London as we bring you updates on the meeting, which you can watch live at the top of this page.