Not that long ago, photographing the Milky Way meant a dedicated camera, a fast lens, and a fair amount of technical knowledge about long exposures. Now a decent phone with a proper night or astro mode gets you most of the way there, and Google's own writeup of how its Night Sight and astrophotography modes work is a reasonable summary of what changed: larger sensors that gather more light per pixel, and computational stacking that merges dozens of exposures into one clean image instead of relying on a single long exposure the way a traditional camera does.
What's Actually Doing the Work
The mechanism is worth understanding before you go shoot, because it explains why a phone on a tripod can now produce a passable star shot. Instead of one multi-minute exposure — which a small sensor handles badly, since heat and noise build up over that time — the phone takes a rapid series of shorter exposures and stacks them, using the differences between frames to separate real detail (stars, a lit foreground) from random noise. Dedicated astro modes automate this entirely: point the phone at the sky, hold it steady on a tripod, and the software handles exposure, ISO, and stacking on its own. That's a genuine technical achievement, not a marketing exaggeration — it's the same principle serious deep-sky astrophotographers have used for years with dedicated stacking software, just automated and shrunk down to run on a phone in real time.
I wouldn't put much weight on any specific phone-model ranking or "night score" you find online, including ones I could write here — these change with every product cycle, the underlying scoring methodology is rarely disclosed, and by the time you're reading this the specific models will likely be outdated. What's worth checking when you're choosing a phone for this is simpler: does it have a dedicated astro or star-trail mode, can you lock focus manually to infinity, and does it support RAW capture for more editing flexibility afterward. Those three things matter more than a marketed "night score."
Milky Way Photography
The core technical requirements don't change: you need genuine darkness, a stable tripod, and a night with the moon out of the sky or close to new — moonlight washes out the fainter parts of the Milky Way the same way city light pollution does. For darkness, the Bortle scale is the standard reference for how much light pollution a location has, and generally you want a Bortle 4 or darker sky for the Milky Way's core to show up clearly — that usually means getting a real distance away from a city, not just to its outer suburbs. Exactly when the Milky Way's core is visible and in what part of the sky depends heavily on your latitude and the time of year, so I'd use a planning app like PhotoPills or Stellarium for your specific location and date rather than trusting a generic month-by-month calendar — those vary enough by where you actually are that a one-size-fits-all schedule is more misleading than helpful.
On location, the process is straightforward: arrive with enough time for your eyes to adjust to the dark, mount the phone securely, switch on airplane mode so a notification doesn't interrupt a multi-minute exposure, lock focus manually to infinity, frame in some foreground interest — a silhouetted tree, a rock formation, anything that gives the shot scale — and then leave the phone alone while it captures. The instinct to check the screen mid-exposure is the single most common way to ruin an otherwise good shot.
Star Trails, Moon Shots, and Aurora
Star trails work on the same stacking principle stretched over a much longer total duration — thirty minutes to a couple of hours of repeated short exposures, later combined into one image showing the stars as arcs around the celestial pole. Point roughly at Polaris in the northern hemisphere if you want circular trails centered in frame, bring an external battery (a continuous half-hour-plus capture will drain a phone faster than you'd expect), and don't touch the phone until it's done.
The moon is deceptively bright relative to the night sky around it, which is the mistake most people make — treating it like any other dark-sky subject and badly overexposing it into a featureless white disc. Lock exposure specifically on the moon rather than the sky, keep ISO low since it doesn't need help gathering light, and use whatever your phone's maximum zoom is to fill more of the frame — a wide shot of the moon over a landscape needs a different exposure approach than a close-up meant to show craters.
Aurora photography needs real darkness and a much higher ISO than any of the above, since the aurora — despite how vivid it looks in photos — is genuinely dim to the naked eye in a lot of cases. A five-to-fifteen-second exposure at a high ISO, on a tripod, generally captures more color and structure than your eyes see in the moment. For knowing when to even try, space-weather forecasting services that publish the Kp index are the standard tool; I wouldn't rely on any single app's star rating as a claim about its actual forecast accuracy, since that's not something these apps publish rigorous data on.
Gear Worth Having
A stable tripod is the one non-negotiable — every technique above depends on the phone staying completely still, and no amount of computational stacking compensates for a wobbling mount. Beyond that, an external battery pack is worth carrying for anything involving a long capture sequence, and a small red-light flashlight (red preserves night vision better than white light) is a genuine quality-of-life improvement once you're fumbling with a tripod in the dark. I'd treat lens attachments, star trackers, and other specialty gear as things to add later if you find yourself shooting night skies often, not as starting requirements — none of them substitute for a stable tripod and a dark sky, which is where the actual image quality comes from.
Editing Night Shots
Night and astro shots generally need a lighter touch than people expect on exposure and a slightly heavier one on shadow recovery — pulling shadows up reveals foreground detail that the phone's own processing sometimes leaves too dark, and a modest contrast boost adds punch without looking artificial. Cooling the white balance slightly tends to read as more natural for a night sky than the phone's automatic warm-leaning guess. Beyond that, restraint is the same rule as any other genre: it's easy to over-saturate a night sky into something that looks synthetic, and a slightly more subdued edit usually reads as more credible than a maximally vivid one.
Common Mistakes
The ones that ruin the most shots: forgetting to enable airplane mode before a long exposure, an unstable tripod on soft ground, shooting during a bright moon phase when you actually wanted the Milky Way, and touching the phone mid-capture out of impatience. All four are avoidable with a bit of discipline, and all four are the difference between a frustrating night and a shot worth keeping.
The Honest Takeaway
None of this makes astrophotography effortless — you still need genuine darkness, a stable setup, and patience, and no phone software substitutes for any of those three. What's changed is that the technical floor has dropped enough that a beginner with a decent phone and some planning can get a real, presentable shot of the night sky on their first serious attempt, which simply wasn't true with phone cameras a few years ago. The rest — finding good compositions, being patient with weather and moon phase, learning to read a dark sky — is the same skill it's always been.