What did I see in the sky?
You saw something in the sky over Belgium — a light, a moving object, something unexplained. Sky Lens helps you identify it. Our platform combines live aircraft data (ADS-B), satellite orbits, star and planet positions, weather data, terrain analysis and airspace classification to score and rank every observation by probability.
Unexplained lights in the sky generate reports, rumours, and questions. Sky Lens exists to answer them — systematically, with data.
Awareness by day and night
Give observers — professional or amateur — a clear understanding of everything that could have been visible from their location at any given moment.
Demystify misidentified light sources
Satellites, planets, aircraft strobes, tower beacons — many reported "unknown objects" have a prosaic explanation. Sky Lens surfaces it before speculation takes root.
Resolve uncertainty in reported sightings
Reduce the ambiguity around airspace reports by providing a structured, evidence-based probability assessment for every observation.
3D context for observations
Position, terrain, building obstruction and line-of-sight geometry are rendered in a real-world model — anchoring every report to physical reality.
Corroborate reporting
Cross-reference independent data sources — ADS-B, orbital mechanics, ephemeris, NOTAM, weather — to either support or contradict what was reported.
Provide investigative leads
When no known object explains a sighting, the system quantifies that gap and surfaces the conditions — airspace class, proximity to infrastructure, time — that matter for follow-up.
Sky Lens cross-references live ADS-B transponder data, satellite orbits, celestial ephemeris, weather, terrain and Belgian airspace — and scores every candidate against your observation.
Choose your location and time
Click on the map or enter coordinates. Pick the exact moment of your observation.
Describe what you saw
Direction, colour, movement, sound — each detail sharpens the scoring algorithm.
Receive ranked candidates
Every possible object is scored and ranked by probability. The top match is your answer.
When you submit an observation, Sky Lens cross-references it against every object that could realistically have been visible from your location at that exact moment — transponder-equipped aircraft verified in real time via ADS-B, satellites whose positions are computed from live orbital data, planets and stars calculated from ephemeris, tall structures on the ground, and statistical estimates for aircraft and drones that leave no electronic trace.
Each candidate is first tested against hard physical constraints: if an object was geometrically below the horizon, obstructed by buildings or terrain, or simply too far away to see at its altitude, it is eliminated before any comparison is made.
For every candidate that passes those gates, the system evaluates your description — where you looked, how high it was, how it moved, what lights it showed, what sound it made, and how long it lasted — against what each type of object is known to look and behave like.
Regulatory and contextual knowledge is layered on top: proximity to airfields, day of the week, cloud cover, the legal airspace class at your location, active temporary restrictions, and whether any RC flying sites are nearby.
Finally, if none of the known explanations fits particularly well, the likelihood of an unidentified object — such as an unregistered drone — rises automatically. The result is a ranked list with the probability share each explanation holds.
A single platform that fuses multiple data sources into one actionable view.
Live ADS-B Tracking
Real-time aircraft positions over Belgium, updated every 10 seconds with full flight metadata including altitude, heading and speed.
Satellite Pass Prediction
14,000+ satellite orbits computed in real time. See ISS, Starlink and other objects pass overhead for your exact location.
Drone Probability Scoring
When no ADS-B target explains a sighting, the system automatically evaluates drone likelihood using airspace, time, and context.
Celestial Awareness
Planets, bright stars, and the Moon — all computed for your exact position and time. Accounts for day/night conditions automatically.
Belgian Airspace Layers
Full airspace overlay: CTR, TRA, TSA, restricted zones with NOTAM-aware activation status, drone-free zones, RC fields and obstacles.
Historical Replay
Every data point is stored. Rewind to any moment and replay exactly what was in the sky over Belgium.
Whether the question is personal or professional, Sky Lens turns an unexplained sighting into a structured, evidence-based conclusion.
You saw something and want to know what it was
Sky Lens cross-references everything visible from your location at that exact moment and returns a ranked, evidence-based analysis — with the reasoning shown for every candidate.
You need to make sense of a sighting after the fact
Replay any moment in the past, see precisely what was in the sky, and build a clear picture of what the observation most likely was — with supporting data you can rely on.
You want to know what's overhead right now
Drop a pin anywhere over Belgium and explore what's above you at this moment — aircraft, satellites, celestial objects, airspace status and more, all in one view.
Choose a location, set the time, and describe what you saw. Sky Lens gives you a ranked list of candidates with evidence.