Privacy
What this site keeps, and what it sends where
Last updated: 8 November 2026
In short
- No accounts, no ads, no tracking, no cookies, no visitor counting.
- Your location is used only inside the page on your own device. It is never sent anywhere and never stored.
- The town search uses a list that is part of this website. What you type is not sent to any search service.
- Everything the app needs (code, fonts, pictures, star, galaxy, town and satellite lists) comes from this website itself. Your browser contacts no other service.
- We have no server and no database, so we hold no personal data about you.
Who runs this site
Send Me Up is a free, personal, non-commercial project by Arman, the maker of Dig Straight Through and Moment in Orbit. For any question about privacy, write to digstraightthrough@gmail.com.
What stays on your device
Nothing is saved. The site does not use cookies or your browser's storage. When you close the page, your trip is gone.
Your location
Under the button you choose where you start from: My location or Type a town. The site only asks for your location when My location is chosen and you are sent up. Your browser asks for your permission first, and the site asks for a fresh position each time, so it never uses an old one. To find your position, your phone or browser may use its own location service; that happens between you and your device, under its own privacy rules.
The position the browser gives us is used inside the page to work out what is straight above you. It is not sent to us or to anyone else, and it is not stored.
If you would rather not share your location, choose Type a town and type a nearby town instead.
What your browser asks this website for
Like any website, your browser downloads this site's pages and files. The website is hosted by GitHub Pages, which receives your internet (IP) address and basic browser information with each download, and handles that under its own privacy statement. Two kinds of files say a little about what you do:
| Service | When | Which files | What that reveals |
|---|---|---|---|
| GitHub Pages (hosting) Privacy statement |
Every visit | The page, its code, fonts, pictures (the Earth map, the planets), the list of named stars and the satellite list (the same for every visitor) | Only that you visited |
| GitHub Pages | When you type a town | One small part of the town list, chosen by the first letters you typed (for example the part for "ol…") | The first two letters you typed (up to five for very common beginnings like "Santa…"), not the whole name |
| GitHub Pages | When you press Send me up | The galaxy lists for your part of the sky, in strips of 10 degrees north–south | Your latitude to within about 4 to 6 degrees (roughly 500 km north–south; wider near the poles), but not your longitude or exact position. For comparison, the internet address that every website sees usually says more than this. |
What we don't do
- No user accounts or sign-in.
- No advertising, no tracking tools, no visitor statistics.
- No selling or sharing of data. We don't collect any to begin with.
- Fonts and code libraries are served from this site itself, so your browser does not contact Google or code-hosting services when you visit.
Where the facts come from
The sky is calculated on your device from these free sources. Our trimmed copies of the lists are shared under the same licences.
- Positions of the Sun, Moon and planets: Astronomy Engine by Don Cross (MIT licence).
- Stars: HYG Database by David Nash (CC BY-SA 4.0).
- Galaxies: OpenNGC by Mattia Verga (CC BY-SA 4.0).
- Distances of famous galaxies: Wikipedia, Messier object (CC BY-SA 4.0). Other galaxy distances are rough estimates from their redshift.
- Towns: GeoNames (CC BY 4.0).
- Earth map and planet pictures in the trip film: made from maps by Solar System Scope, based on NASA data (CC BY 4.0). We wrapped the planet maps onto spheres and made them smaller; they are stored on this website. The landmarks are our own simple drawings, and our galaxy in the film is a simple sketch of its spiral arms.
- Satellite orbit data: CelesTrak, which gets it from the US Space Force (18th Space Defense Squadron) via Space-Track. Our copy is refreshed from CelesTrak, not by your browser. Satellite positions: satellite.js (MIT licence).
- Background photos (the "Cosmic Cliffs" in the Carina Nebula, and Webb's First Deep Field): NASA, ESA, CSA, and STScI, from ESA/Webb (CC BY 4.0). We made them smaller and darker; they are stored on this website.
- Rocket sound at lift-off: "Large Rocket Engine" by Zovex (Freesound), via Pixabay (Pixabay Content License). Stored on this website.
- Facts about the planets, the Moon, the Sun and the Space Station: worded from NASA's fact pages. Heights of the layers of the air: NOAA.
- Fonts: Bricolage Grotesque, Instrument Sans and JetBrains Mono (SIL Open Font License).
Links on this page open other websites only if you click them. Once you are there, their own privacy rules apply.
Your rights
Because this site stores no personal data on any server, there is nothing about you for us to show, correct or delete. You can always write to us at digstraightthrough@gmail.com, and you have the right to complain to your local data protection authority.