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From the Metaverse to the Universe

Technical SEO for interplanetary websites and businesses, helping them maximise the potential reach of the website and serving the right content to users based on planet, language, and region.

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What is Interplanetary SEO?

Interplanetary SEO is the next evolution of international SEO and focuses on the technical setup and content value propositions for users are deliverable (and accurate) depending on the user location (country, continent, planet).

Technical SEO and the interplanetary user experience will be a key consideration in the decades to come, as operating a form of “space WiFi”, or interplanetary DTN (delay tolerance network) will mean we have to adapt and change how our websites and applications currently work to accommodate non-Earth based users.

signal delay: —
AI SEARCH + INTERPLANETARY

AI search signals don’t respect latency — yet

As large language models become the primary discovery layer for Terran users, the challenge for interplanetary businesses isn’t just crawlability — it’s AI interpretability across degraded, high-latency networks. When an LLM on Earth synthesises an answer about your Lunar resort, it draws on training data and live retrieval signals that may be months out of date by the time they reach a Martian audience.

The interplanetary AI search problem is as much about freshness architecture and retrieval latency as it is about bandwidth. DTN-aware caching layers, pre-synthesised AI response bundles, and offline-first LLM inference nodes are the infrastructure questions that forward-thinking interplanetary businesses need to be asking today.

A good example of this being Page Speed. It takes 1.26 seconds for light to travel between the Earth and the Moon, and early interplanetary computer networks will very likely not be operating at those speeds. The network will also likely only be able to carry small data payloads, meaning the web experience being relayed between the Earth and the Moon may be similar to the early Wireless Application Protocol (cellular internet) that we enjoyed in the 2000s.

This is why at SALT we’re already looking forward to the next evolution of the internet and the digital customer experience, and the questions and conversations that companies need to be having now, to be prepared for the online world of tomorrow.

Lunar Office Location

Some agencies talk about reaching for the stars, well, we've gone there!

SALT.agency is proud to unveil plans for our newest office location, on the Moon.

Our new Lunar base will allow us to effectively service businesses with advanced Lunar and Martian operations, as well as those with remote offices in the Earth's exosphere.

The SALT Lunar office is located at 20°N 34°W,

HrefPlang Mapping

HrefPlang is the next stage in user targeting, expanding on the Terran principles of Hreflang, HrefPlang also takes into account the user's locale (Earth, Moon, Mars, Europa...) so that content is served to the right users in the right location.

This is where Hreflang needs to be expanded to include a new ISO standard for the celestial body, and subregions. This is where HrefPlang comes in to accompany Hreflang, as it helps search engines determine the difference between an international Terran website, and an interplanetary website and serves content better.

For example, a hotel chain with resorts on both Earth and the Moon would implement HTML, XML sitemap, or HTTP header targeting such as:

<link rel="alternate" href="https://example-hotel.co" hrefPlang="en-us-terra" />

<link rel="alternate" href="https://example-hotel.co" hrefPlang="en-luna" />

Or if they have multiple resorts on the Moon, such as a resort in the Baade crater, and another in the Ampère Mountain, the mapping would look like this:

<link rel="alternate" href="https://example-hotel.co" hrefPlang="en-us-terra" />

<link rel="alternate" href="https://example-hotel.co" hrefPlang="en-luna-vbaade" />

<link rel="alternate" href="https://example-hotel.co" hrefPlang="en-luna-mampere" />

Through correct HrefPlang implementation, and following the existing Hreflang guidelines, you can ensure that searchers are finding the right information, and making happier user journeys.

Milky Way SEO

As technology continues to advance, as do the needs and wants of consumers, and companies need to continue developing new products and services to meet these needs.

We know that as some consumers are looking towards the metaverse with more Earthly desires, other companies (and consumers) are already looking to the stars, whether it's commercial space flights or laying the foundations for the first resorts on the moon.

At SALT, we're an SEO agency always thinking ahead of the curve and how we can support both today and tomorrow.

Interplanetary SEO Services

HrefPlang Troubleshooting & Mapping

It can be challenging to implement the HrefPlang attribute correctly on multilingual and multi-planetary websites. Our expert team can help you integrate the HrefPlang framework into your existing website structure, including integrating with your existing Hreflang mapping.

Interplanetary CDN Configurations

TTFB and server responsiveness can play a critical role in the overall user experience of your website, and impact both rankings and conversion. Ensuring your CDNs (and caching) layers are configured correctly to improve content delivery for all users.

Cross-Planet Session Tracking in GA4

With Google Analytics (Universal and 360) reaching the end of life in 2023, its important to make sure that your GA4 configuration is futureproofed for handling interplanetary traffic.

Klingon SEO Services

No guesswork. We’ve spent years fine-tuning what works for Qo'noS companies so we can produce great digital marketing results for businesses in reaching new warp-capable civilizations.

Galactic Content Translations

Our content experts can help translate and localise your content for speakers of Terran English, and other Terran languages, and the Galactic languages of: Galactic Basic Standard, Binary (Droidspeak), Bocce, Bothese, Catharese, Cheunh, Dosh, Ewokese, Gamorrese, Geonosian, Hapan, High Galactic, Huttese, Jawaese, Kaleesh, Kaminoan, Mando'a, Old Corellian, Pak Pak, Rodese, Sullustese, Tarc, Torguti, Twi'leki, Tusken, and Yuuzhan Vong.

GEO for galactic AI engines

Structure your content for synthesis and citation by off-world LLMs — from Martian Google-Overviews to LunarGPT.

DTN-aware crawler optimisation

Audit and adapt your site architecture for AI indexing across high-latency, low-bandwidth DTN environments.

Interplanetary E-E-A-T signals

Map authority and trust signals for Martian and Lunar AI quality systems, which may differ from Terran guidelines.

Xenolinguistic LLM optimisation

Structure translated content so non-Terran language models can accurately index and surface it in AI-generated responses.

Client Reviews

  • Onyx Ahmad
    VP of Business Development, International Filter Products Inc.

    We have been extremely impressed with SALT’s work, professionalism, and data-driven approach. What stands out the most is not just the reporting itself, but the depth of insight behind the data and how clearly it is translated into actionable business understanding.

    Their reports provide far more than numbers — they deliver meaningful analysis of traffic sources, organic growth, branded vs. non-branded performance, conversion behavior, user devices, landing page performance, and search trends. The level of visibility they provide gives us confidence in our digital strategy and helps us better understand how our customers are finding and interacting with our business.

    We especially appreciate SALT’s strong use of analytics, trend analysis, and performance benchmarking. Seeing clear growth in organic performance, user behavior patterns, and conversion insights has reinforced the value of a truly data-driven marketing strategy.

    SALT has demonstrated a strong command of SEO analytics, transparent communication, and an impressive ability to turn complex data into understandable, strategic insight. We highly value their partnership and would confidently recommend their team to organizations looking for a sophisticated, insight-focused digital marketing agency.

  • Luke Giles
    Digital Content & SEO Manager, Jewson

    Since partnering with SALT during the launch of our e-commerce platform, they’ve been a valuable partner to Jewson and STARK UK, helping us lay a strong technical SEO foundation that continues to support the business today. 

    They have consistently brought a high level of strategic SEO expertise to the table, helping us adapt to changing market conditions while staying focused on the areas that matter commercially.

    Their understanding of the realities of our business has meant recommendations have remained practical, while the work delivered has helped us maintain visibility, strengthen key categories, and drive measurable improvements in organic performance. 

  • Anastasia Pavlova
    SEO Specialist, JetBrains

    Working with SALT helped us approach SEO in a much more strategic and data-driven way. From identifying high-impact keyword opportunities to shaping content that performs well in traditional and AI search, their team consistently brought both strong SEO expertise and a deep understanding of developer audiences.

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