If Star Walk sounds familiar, perhaps it’s because this star-gazing app topped our chart of the best augmented reality apps for the iPhone relatively recently.
To use this AR application, just point your iPhone at a section of the sky and Star Walk will overlay the names of every star, constellation, and satellite in your field of vision.
The newly issued update for this well-reviewed app adds social features, so that any Twitter user who deploys the hashtag #starwalk appears on an in-app globe, allowing him to communicate with other stargazers from around the world.
Solar Walk, meanwhile, grants you the ability to explore and manipulate 3D models of our Solar System, discovering facts about the composition of the planets and the sun.
There are even fact-filled videos in the app, which have now been updated to include voice-overs.
New high-resolution planet textures have also been incorporated into the latest version of Star Walk, with the publisher finding time to tweak the interface, too.
Both Solar Walk and Star Walk are available to download from the App Store for £1.99 / $2.99 each.