The short answer
The famous “train” of Starlink satellites, a line of bright dots moving across the sky one after another, is mostly visible in the days after a launch, while the satellites are still low and bunched together. As they climb to their working orbits and spread out, they get fainter and harder to spot. To see a train you need a prediction for your location, a clear sky shortly after dusk or before dawn, and some luck with timing.
Individual Starlink satellites in their working orbits can still be seen on most clear nights from a dark site, but they are usually faint, short glimmers rather than a parade. Expect something subtler than the viral videos.
Why new launches look like a train
Starlink satellites are launched in batches. Right after release they fly close together in a low orbit, one behind the other, like beads on a string. Over the following days and weeks, each satellite uses its own thrusters to climb to a higher orbit, and the line stretches out and breaks up.
Two things make the early train bright: the satellites are closer to you, and during orbit raising they are often oriented in a way that reflects more sunlight. Once they reach their working orientation, the operator has taken steps to reduce how much light they reflect, which helps astronomers and makes them dimmer for casual watchers.
| Stage | What you see |
|---|---|
| First days after launch | A tight, bright line of dots following one another across the sky; the classic train |
| Following days and weeks | The line stretches out; satellites become fainter and spaced further apart |
| Working orbit | Scattered, faint single satellites; often near the limit of the naked eye |
When to look
Like every satellite, Starlink only shines when sunlight reaches it while your sky is dark. That means the best windows are in the hours after sunset and before sunrise. In the middle of the night, most satellites are in Earth’s shadow.
Around midsummer at mid and high latitudes, the Sun doesn’t sink far below the horizon, so satellites can stay sunlit far into the night, and you may notice many more of them.
Finding a prediction
Because satellites move fast and their orbits change, especially just after launch, you need a pass prediction calculated for your location from recent tracking data. A good prediction gives the start time, the direction where the satellites appear, how high they climb and where they fade out. Use the satellites section of SkyMate for what’s trackable now.
Predictions for brand-new batches are the least reliable. Their orbits are still being measured and are changing as they climb, so times can be off by minutes. Go out early and stay a little longer than the predicted window.
How to watch
- Use your eyes. A train spreads across a large part of the sky; binoculars show too little of it at once.
- Face the start direction. Satellites appear low, often fainter at first, then brighten as they climb.
- Watch for the fade. Satellites often vanish one by one in the same spot as they enter Earth’s shadow.
- Get away from lights for single satellites. Bright trains show from suburbs; individual Starlinks in their working orbits are much easier from a dark site. See dark adaptation and light pollution.
Starlink, the ISS and other satellites
If you want a satellite that’s easy to see on almost any visible pass, start with the International Space Station. It is far larger and usually much brighter than a Starlink satellite, and it’s easy to see from cities. Check the ISS pass finder and read how to see the ISS.
On any dark evening, patient watching will also turn up many other satellites: steady points drifting across the stars, some fading in and out as they tumble. Spotting them is a pleasant side effect of a night outdoors, and a useful reminder that a moving “star” with no blinking lights is almost certainly a satellite, not a plane.