Recently updated Cylindrical Texture Calibrator, a Python utility with a GUI that was developed to help the @celestiaproject.bsky.social community with ongoing updates (we need more devs, by the way!). I've included some interesting details in the thread. [1/5]

The good old days...

Happy New Year from all of us at Celestia! This year will be a big year for spaceflight and astronomy, and Celestia too.

Celestia mobile 1.9.3 for Apple devices has been released. This update includes content updates, catalog lookup fixes and an update button for add-ons that have updates. Download from GitHub

Celestia mobile 1.9.3 for Android devices has been released. This update includes content updates, catalog lookup fixes and an update button for add-ons that have updates. Download from GitHub

🎄 Are your holiday decorations ready? Euclid has a cosmic garland to add: NGC 646. The large barred spiral galaxy appears close to a smaller galaxy to the left, but they’re actually about 45 million light-years apart 👉 https://www.esa.int/ESA_Multimedia/Images/2025/12/Euclid_s_galaxy_garland 🔭

🔭 Andromeda and Friends Image Credit & Copyright: Piotr Czerski apod.nasa.gov/apod/ap25111...

Celestia mobile 1.9.2 for Apple devices has been released. This is a content update. Download from GitHub

Celestia mobile 1.9.2 for Android devices has been released. This is a content update. Download from GitHub

🔭 Two Tails of Comet Lemmon Image Credit: Massimo Penna star.ucl.ac.uk/~apod/apod/a...

🔭 Webb's Rho Ophiuchi Image Credit: NASA, ESA, CSA, STScI, Klaus Pontoppidan (STScI), www.star.ucl.ac.uk/~apod/apod/a...

Celestia mobile 1.9.1 for Apple devices has been released. This is a content update which also adds support for iOS/iPadOS/macOS 26. Version 1.9.0 for Apple devices had the same changelog. Download from GitHub

Celestia mobile 1.9.0 for Android devices has been released. This is a content update. Download from GitHub

Celestia mobile 1.8.9 for Android devices has been released. This update fixes a bug where the 'Go' button would be missing on installed add-ons. Full changelog and download available on GitHub

Celestia mobile 1.8.8 for Apple devices has been released. This update includes content updates, a new camera setting, bugfixes and general improvements. Full changelog and download available on GitHub

Celestia mobile 1.8.8 for Android devices has been released. This update includes content updates, a new camera setting, bugfixes and general improvements. Full changelog and download available on GitHub

Celestia mobile 1.8.7 for Apple devices has been released. This update includes Lua fixes, constellation line fading revision, changes to comet tail size calculation, atmosphere updates, and other minor fixes and additions. Full changelog and download available on GitHub

Celestia mobile 1.8.7 for Android devices has been released. This update includes Lua fixes, constellation line fading revision, changes to comet tail size calculation, atmosphere updates, and other minor fixes and additions. Full changelog and download available on GitHub

Celestia mobile 1.8.6 for Apple devices has been released. This update fixes some minor bugs. Full changelog and download available on GitHub

Celestia mobile 1.8.5 for Apple devices has been released. This update fixes an issue with the context menu not loading or actions not working. Download from GitHub

Celestia mobile 1.8.4 for Apple devices has been released. This update includes updates to the exoplanet catalog, minor data updates, and gyroscope support. 1.8.3 was also released and has the same changelog. Download from GitHub

Celestia mobile 1.8.3 for Android devices has been released. This update includes updates to the exoplanet catalog, minor data updates, and gyroscope support. Download from GitHub

Celestia mobile 1.8.2 for Apple devices has been released. This update includes content updates, better temperature calculation, revisions and corrections, and other minor changes. Full changelog and download available on GitHub

Celestia mobile 1.8.2 for Android devices has been released. This update includes content updates, better temperature calculation, revisions and corrections, and other minor changes. Full changelog and download available on GitHub

Celestia mobile 1.8.1 for Apple devices has been released. This update fixes InfoURLs for exoplanets. [Download from GitHub(github.com/celestiamobi...)

thinking about bringing back screenshot of the day to this account and the twitter account. just not sure how to set up a system through which people can submit their screenshots

🔭 Titan: Moon over Saturn Image Credit: NASA, JPL-Caltech, Space Science Institute apod.nasa.gov/apod/ap25050...

🔭 IC 418: The Spirograph Nebula Image Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA); Acknowledgement: R. Sahai (JPL) et al. apod.nasa.gov/apod/ap25042...

👀 Spot the European spacecraft that relays the most data from Mars to Earth: around 200 megabytes per day. 🛰️ @esa.int's Trace Gas Orbiter is the youngest spacecraft of the Mars Relay Network. 🎥 Check this cool NASA interactive feature: science.nasa.gov/mars/mars-re...

Celestia mobile 1.8.0 for Apple devices has been released. This update fixes InfoURLs for exoplanets. Download from GitHub

Celestia mobile 1.8.0 for Android devices has been released. This update fixes InfoURLs for exoplanets. Download from GitHub

🌳🛰️ Our groundbreaking Biomass satellite lifted off on Vega-C #VV26 from Europe’s Spaceport in French Guiana at 10:15 BST/11:15 CEST on 29 April. The satellite is designed to provide unprecedented insights into the world’s forests and their crucial role in Earth’s carbon cycle.

Get ready to track our forests' biomass! 🌳🛰️ ESA's Biomass mission is scheduled for launch tomorrow, 29 April, at 11:15 CEST. ▶️ Follow live from 10:55 CEST: www.youtube.com/live/EEhmFO_... 🔭

🔭 Asteroid Donaldjohanson Image Credit: Lucy/NASA/Goddard/SwRI/Johns Hopkins APL/NOIRLab apod.nasa.gov/apod/ap25042...

It's #1stApril but this is no joke. The clock is most definitely ticking. A catastrophic chain reaction of space debris causing collisions, each creating more debris, is not just a possibility, it's already under way. In some orbits, we really could run out of space. Is it a crisis?

🔴 Live now from the 9th European Conference on Space Debris...

"Preventing the addition of new debris is no longer sufficient. We must now actively clean up the space environment to halt the onset of a chain reaction that could render heavily utilised regions unusable. Immediate and decisive action is necessary." Read the ESA Space Environment Report 2025 👇

Airbus in the UK have been awarded £150 million to help deliver Europe's Mars rover to the red planet. 🚀🔴 Funded by @esa.int through us, Airbus will develop the landing system for the Rosalind Franklin rover, set to land in 2030 in the hunt for past Martian life. www.gov.uk/government/n...

🔭 Messier 81 Image Credit & Copyright: Lorand Fenyes apod.nasa.gov/apod/ap25032...

🔭 Star Formation in the Pacman Nebula Image Credit & Copyright: Juan Montilla (AAE) apod.nasa.gov/apod/ap25032...

😵 Be ready to be amazed! The NASA/ESA/CSA James #Webb Space Telescope brings you the "Cosmic Tornado" 🌪️ Webb observations have also revealed the identity of the fuzzy object at the tip of this object also known as Herbig-Haro 49/50. Read more 👉 www.esa.int/Science_Expl... 🔭 🧪 ☄️

The current trend in our Discord server is to use Celestia's MultiView feature and disable the frame outlines to create unique screenshots. MessisUniverse took this screenshot of Saturn's major moons, for example

Celestia mobile 1.7.13 for Apple devices has been released. This update fixes InfoURLs for exoplanets. Download from GitHub

Celestia mobile 1.7.13 for Android devices has been released. This update fixes InfoURLs for exoplanets. Download from GitHub

⏰ Have you set your alarm for 12:00 CET / 11:00 GMT today? Be ready to be amazed at the latest treasures uncovered by #ESAEuclid, our #DarkUniverse detective 🕵️ Watch this space for details & this link for a video premiere: www.youtube.com/watch?v=rXCB... 🔭🧪 #astrosci

🔭 Venus and the Triply Ultraviolet Sun Image Credit: NASA/SDO & the AIA, EVE, and HMI teams; Digital Composition: Peter L. Dove apod.nasa.gov/apod/ap25031...

📷 Check out our #WeekInImages, 10-14 March 2025. 👇 www.esa.int/About_Us/Wee...

Just in! 📸 The first images from yesterday’s #HeraMission flyby of Mars and its moon Deimos. 👇 www.esa.int/Space_Safety...

What does it look like when you fly through Saturn's system of 274 moons? Here's a quick flyby simulation in @celestiaproject.bsky.social to show the scale of Saturn's moon system. With the sheer number of outer moons, you often find them passing within a few million miles from each other.🧪🔭

🔭 NGC 1499: The California Nebula Image Credit & Copyright: Toni Fabiani Mendez apod.nasa.gov/apod/ap25031...