For exploring the stars
▪ NASA, a free app created by the U.S. space agency, offers more than 15,000 images and 13,000 videos, plus access to live NASA TV and all the latest astronomy news. It’s “a lot to take in,” but there’s perhaps no better app for learning about the cosmos.
▪ Star Chart offers an augmented-reality guide to the stars. “Simply point your iPhone at the sky, and Star Chart will tell you exactly what you’re looking at.”
SkyView works in a similar way.
▪ Exoplanet is an interactive catalog of all known planets beyond our solar system. It’s updated regularly, and because it has its own augmented reality map, you can look up and find an exoplanet anytime stars are visible.
▪ ISS Spotter provides forecasts of when and where the International Space Station will next be passing overhead. You can set an alarm to make sure you don’t miss it.