A dazzling light hanging still in the sky? Often it’s a landing airplane

6 min read

It sits low in the sky, outshines every star, and then suddenly starts moving or fades. Often what you’re seeing is the landing light of an airplane heading toward you. Here is how to recognize it.

What do you see?

A strong white or yellowish-white point of light, low above the horizon. It is brighter than the stars, it doesn't blink, and for minutes it barely moves. Then it slowly grows larger, turns into two points of light, or drifts sideways and fades.

That behavior fits an airplane on approach that is flying straight toward you. Here is why.

Why does it seem to stand still?

An airplane passing to one side glides quickly across the sky. An airplane heading toward you, on the other hand, barely moves sideways in your field of view. With a distant light you can hardly notice it getting closer, so it can seem to hover even while it is traveling fast.

An article in Skeptical Inquirer cites a case from New Hampshire. Witnesses saw colored lights that stayed in one place for about a minute and then moved away. They were the lights of a DC-9 airliner on final approach to an airport. According to the magazine, in another case a distant airplane was reported "hovering" for some twenty minutes.

Why do you see only one light?

A landing light is a powerful, forward-facing lamp on the aircraft's nose or wing roots. Seen head-on, it can drown out the plane's smaller lights, including the flashing ones. So the airplane looks like a single, steady point of light.

The other lights are still on. Under European aviation rules, every aircraft in flight at night must display anti-collision and navigation lights. The navigation lights are:

red on the left wingtip,
green on the right wingtip,
white on the tail.

If the airplane is heading toward you, you see the red light on your right and the green light on your left.

Why does it turn into two lights, and why does it suddenly vanish?

Many aircraft carry more than one landing light, for example one at each wing root. From far away they merge into one point; closer in, they appear separately. The U.S. Federal Aviation Administration (FAA) handbook also notes that lights on an object can be seen individually up close but may look like one solid light from farther away.

When the airplane turns, its sideways motion suddenly becomes visible, and the "hovering" light seems to take off all at once. Because the landing light points forward, after the turn it no longer points at you, and the glare can fade.

The arrangement of lights can even suggest a shape. On the Metabunk forum, a photo shared as a "boomerang-shaped UFO" was matched to the landing and navigation lights of a Boeing 727.

Distance is the hardest thing to judge

At night you can't see how big a point of light is, so you can't judge how far away it is either. This fools trained observers too. In 2021, military personnel reported five equally spaced lights in military airspace in the western United States, suspecting an unauthorized incursion. The lights were recorded by an infrared sensor.

The All-domain Anomaly Resolution Office (AARO) closed the case in 2023. According to AARO, the lights were almost certainly airliners traveling on established air corridors, as far as 556 kilometers (300 nautical miles) from the sensor. The aircraft were much farther away than the observers had thought.

When and where is it most common?

The FAA handbook encourages pilots to turn on their landing lights near an airport when below about 3,000 meters (10,000 ft). Many airlines follow the same practice. So an airplane can approach with a dazzling light while still far from the runway.

On final approach, aircraft usually descend at an angle of 3 degrees, losing roughly 50 meters of altitude per kilometer. At 10 kilometers from the runway, a landing airplane is about 500 meters up; at 20 kilometers, about 1,000 meters. If you stand 5 kilometers from the runway, below the approach path, you see the airplane 20 kilometers out only about 4 degrees above the horizon.

Around Budapest, the wind decides where arriving aircraft come from. According to HungaroControl, when runway direction 31 is in use, planes land from the southeast, over Vecsés and Üllő; with direction 13, they approach from Budapest.

How to check it yourself

Watch it for a few minutes. A landing airplane's light grows steadily brighter and descends along the same line.
Look through binoculars. Red and green navigation lights or a flashing anti-collision light may appear next to the bright point.
Open a flight-tracking app such as Flightradar24. It shows aircraft positions, altitudes and speeds on a real-time map. Check whether a plane is flying in that direction.
Around Budapest, check the runway direction. HungaroControl publishes a daily runway direction forecast, so you can tell which way arriving planes are coming from that day.
See whether it comes back. If a light appears at the same time and place for days, it is more likely a planet or a bright star.

When is this not the explanation?

A landing light doesn't explain a light that truly stays put for hours, or one seen far from any airport and approach path. A flight tracker doesn't settle everything either: not every aircraft shows up, because Flightradar24 relies mainly on ADS-B signals broadcast by the aircraft themselves.

If none of the usual explanations fits, note the exact time, the direction and how high the light is above the horizon. Record a video with a fixed object in the frame, and report the sighting.

The sober take

What is certain

A landing light is a strong, forward-facing lamp. Seen head-on, it can drown out the aircraft's other lights.
The FAA encourages pilots to use it near airports below about 3,000 meters (10,000 ft). That is why landing aircraft can look like a dazzling point from far away.
An airplane heading toward you barely moves sideways, so it can seem to stand still.
At night, aircraft must also display navigation and anti-collision lights, which become visible closer in or through binoculars.

How to recognize it

a light that comes from one direction, sits low and slowly grows brighter;
red and green navigation lights or a flashing light next to it, seen through binoculars;
it fades after a turn, and the flashing lights appear;
a flight tracker shows an aircraft in the same direction.

When the question stays open

If the light stays in place for hours, there is no airport nearby, and the flight tracker shows nothing, look for another explanation. Then the exact time, the direction and a video can decide it. The same details also help rule out planets, drones and balloons.