FirstFlight enables you to stay up to date with upcoming space launches in a neat overview. If you want to explore past launches you can search for them with the search feature. When you find a launch that interests you, you can read about its mission and other relevant information. And you can set a notification for specific launches and the app will notify you before launch!
If you just like to stay up to date with news from outer space, you can read them all in news section of the app.