Part of the Beginner's series:

Beginner's Guide Hub: Start here.

How to Get All Achievements & Trophies: The platform-level version of this.

Quick Answer

Journey Milestones are long-running counters for things you already do: distance travelled, creatures scanned, units earned, words learned, deaths, and more. Each one tiers up as the number climbs.
Milestone progress can be handed to an NPC aboard the Space Anomaly in exchange for Nanites. Most players never find this vendor.
The Catalogue and Guide is the game's built-in encyclopaedia. It lists products, technologies, resources, and creatures, along with recipes and where things come from.
Wonders is a separate list recording the extremes you personally discovered, such as the largest creature or the tallest mountain you scanned.
Titles are cosmetic labels earned from milestones and events. You equip one in the appearance options.
None of this is required to finish the game. It exists to give structure to open-ended play, and the Nanite exchange makes it worth checking.

Overview

No Man's Sky has no experience bar and no character levels. What it has instead is a quiet accounting layer that has been running since your first save loaded. Steps walked. Creatures scanned. Systems visited. Times you died in a cave because you forgot about your Hazard Protection.

That layer is spread across four separate menus, which is a large part of why new players never engage with it. Journey Milestones live in one place, the Catalogue lives in another, Wonders sits inside your discoveries, and titles are buried in the character customiser. Nothing in the game points you at all four.

The practical payoff is small but real. Milestone tiers convert to Nanites, the Catalogue removes a lot of guesswork about crafting chains, and Wonders gives you something to chase on planets that are otherwise unremarkable.

Journey Milestones

Journey Milestones are lifetime counters attached to your save. They cover broad categories of activity rather than specific quests, so they fill up whether or not you are paying attention to them. Typical categories include distance travelled on foot and in flight, creatures analysed, plants and minerals scanned, alien words learned, Units earned, systems visited, and combat kills. There are counters for less flattering statistics too, including how many times you have died.

Each milestone has multiple tiers. Cross a threshold and it advances, usually with a short notification and sometimes a title as the reward. The tiers are not evenly spaced. Early ones arrive within your first few hours. The highest tiers on some counters are genuinely long-term goals.

You view them from the pause menu, under the Journey or Milestones section depending on your platform's menu wording. The screen shows each category, your current count, your current tier, and how far off the next one is. That last number is the useful part. It tells you which milestones are close enough to be worth a deliberate push.

Milestones are per-save, not per-account. Starting a new save resets them, which is worth knowing before you abandon a file you have poured time into.

The Catalogue and Guide

The Catalogue and Guide is the most useful menu in the game and the one that gets opened least. It is an encyclopaedia of every item, technology, resource, product, and creature type you have encountered, organised into browsable categories.

Open an entry and you get its description, its refining or crafting recipe if it has one, its typical sources, and its base value. Crucially, it also works in reverse. If you are holding a raw material and want to know what it feeds into, the Catalogue can show you the products it is an ingredient for. This turns a question like "what do I do with all this Chlorine" into a ten-second lookup instead of a browser tab.

A few things it answers faster than any external source:

Where does this come from. Refiner inputs, crafting components, and which planet types or structures tend to produce a given resource.
What is this worth. Base values let you sanity-check whether a trade terminal price is good.
What can I build with what I am carrying. Filter by materials you hold and the list narrows to things you can actually make right now.
What have I found. Creature and flora entries fill in as you scan, which doubles as a checklist.

The Catalogue only lists what you have discovered or hold a blueprint for, so it grows with you. Early on it is sparse. By mid-game it covers most of what you handle daily. For a list that does not depend on your save's discovery state, the resources and items index covers the same ground from outside the game.

Wonders

Wonders is a record of superlatives. Not everything you discovered, only the extremes: the largest creature you scanned, the smallest, the tallest peak you stood on, the deepest point you reached underwater, the fastest ship you have flown, and similar records across categories.

It sits with your discovery data and updates automatically when you beat one of your own records. There is no reward attached beyond the entry itself. What it does provide is a reason to scan the enormous grazing animal you would otherwise walk past, and a reason to actually climb the mountain you can see from your base.

It pairs naturally with hunting unusual fauna. The rare creatures and discovery tips guide covers where the outliers tend to spawn, and those same creatures are the ones most likely to set a size record.

Titles

Titles are cosmetic text labels that appear alongside your name, most visibly to other players on the Space Anomaly and in multiplayer. You earn them from milestone tiers, from expeditions, from seasonal and community events, and from a handful of specific in-game accomplishments.

To equip one, open the appearance or character customisation menu, which you can reach from the Space Anomaly's customiser or from the quick menu depending on your version. Titles are listed separately from body, helmet, and colour options. Select one and it applies immediately. You can change it as often as you like, and unequipping a title costs you nothing.

They have no gameplay effect. Their only function is as a signal to other players, which matters if you spend time in the Anomaly's shared space and not at all if you play solo.

Why Any of It Matters

Two concrete reasons.

Nanites. An NPC aboard the Space Anomaly accepts Journey Milestone progress and pays out Nanites for it. This is passive income for things you did anyway, and because most players never speak to that vendor, a long-running save can be sitting on a substantial unclaimed balance. Check in every few dozen hours rather than every session. The payout scales with how much new progress you have banked, so it is better as an occasional sweep. If Nanites are the actual bottleneck for you, the how to get Nanites fast guide covers the methods that produce more per hour.

Time saved. The Catalogue removes the loop of alt-tabbing to look up a refiner ratio or a crafting component, and it is always accurate to your current game version, which external sources sometimes are not.

Tracker	What it records	What it is good for
Journey Milestones	Lifetime counters across broad activities: distance, scans, Units, words, deaths, systems visited	Trading progress for Nanites at the Anomaly; seeing which long-term goals are close
Catalogue and Guide	Every item, resource, technology, and creature you have encountered, with recipes and sources	Answering "where does this come from" and "what can I make with this" without leaving the game
Wonders	Personal records: largest and smallest creatures, tallest peaks, deepest dives, fastest ships	Giving purpose to scanning outliers and exploring extreme terrain
Titles	Cosmetic labels from milestones, expeditions, and events	Displaying accomplishments to other players; equipped in appearance options

Which Milestones Fill Themselves, and Which Need Effort

Most milestones need nothing from you. Distance travelled climbs every time you fly anywhere. Units earned climbs with every sale. Systems visited climbs as you follow the main quest. Creatures and plants scanned climbs steadily if you have the habit of holding the Analysis Visor while you walk, which you should have anyway because scanning pays well. See the fauna and flora discovery rewards guide for why that habit is worth forming early.

The ones that stall are the ones tied to an activity you can skip entirely.

Alien words learned is the clearest example. If you walk past Knowledge Stones and skip conversations with NPCs, this counter barely moves for hundreds of hours. Deliberately farming stones and monoliths advances it quickly. The alien languages and Knowledge Stones guide covers the efficient routes.

Combat-related counters stall for anyone playing peacefully. Sentinel kills and pirate kills require you to seek out fights you would otherwise avoid.

Deaths exists purely as a statistic. Knowing it is tracked matters most on permadeath saves.

Deep exploration counters such as underwater depth or time spent in extreme hazards need specific gear and a plan. They will not tick over during normal surface play.

The practical approach: open the Journey screen once every ten or twenty hours, look for anything sitting just under a threshold, and knock those out. Ignore anything sitting at 3 percent of the next tier. Those will arrive on their own or not at all, and neither outcome should shape how you play.

FAQ

What are Journey Milestones?

Lifetime counters attached to your save that track broad categories of activity: distance travelled, creatures scanned, Units earned, alien words learned, systems visited, deaths, and more. Each has multiple tiers that advance as the number grows. Some tiers award titles. Progress can be exchanged for Nanites with an NPC on the Space Anomaly.

Where do I see my catalogue?

The Catalogue and Guide is accessible from the pause menu on all platforms, listed alongside your options and discoveries. It opens into browsable categories covering products, technologies, resources, curiosities, and lifeforms. Only things you have discovered or unlocked blueprints for will appear.

What are Wonders?

A record of your personal extremes rather than a list of everything you found. It holds entries like the largest and smallest creatures you scanned, the highest and lowest points you reached, and the fastest ship you have flown. It updates automatically when you beat your own record and carries no reward beyond the entry.

How do I change my title?

Open the appearance or character customisation menu, either at the Space Anomaly customiser or through your quick menu. Titles are a separate category from body and colour options. Pick one from your unlocked list and it applies immediately. You can swap or remove it at any time.

Do milestones carry over between saves or expeditions?

No. Journey Milestones are tied to a single save file. Starting a fresh normal save begins the counters at zero. Expeditions run their own separate progression and their milestone counts do not transfer back to your main save, though titles and rewards earned in an expedition do become available to your other characters.

Key Takeaways

Four separate menus make up the progression layer, and nothing in the game connects them for you. Journey Milestones in the pause menu, the Catalogue and Guide alongside it, Wonders with your discovery data, and titles in the appearance customiser.
The Anomaly NPC who trades milestone progress for Nanites is the only part of this with material value. A save with a few hundred hours on it that has never visited them is holding unclaimed currency.
Treat the Catalogue as your first stop for any "what does this make" or "where do I get this" question. It is faster than a browser and correct for your game version.
Most milestones need no attention. Distance, Units, scans, and systems visited all climb through normal play. Alien words, combat kills, and deep exploration counters are the ones that stay frozen unless you go looking.
Check the Journey screen every ten or twenty hours, push anything sitting just short of a tier, and ignore everything else. Chasing the far-off tiers deliberately makes the game worse.
Wonders is the one tracker that changes behaviour for the better. Scanning the giant creature and climbing the visible peak are both fun and both set records, which is a reasonable excuse to do them.

No Man's Sky Milestones & Catalogue Guide: Journey, Wonders and Titles