There's nothing more inherently awesome than looking up into the stars and wondering WTF is really out there. Outer space is one of those rare items that a Google search cannot provide all of the answers for.
There are a lot of popular space apps already available for Android users, but this one, created by XDA member d-fader, really takes the cake.
It's called Fresco, and with it you'll be able to see some of the greatest pictures ever taken from outer space. It has a massive library of over 5,800 pictures and a new one is uploaded every single day.
To be specific, this app gets all of its images straight from NASA's own Astronomy Picture of the Day website—and has every one posted dating back to 1995! Sure, you can just browse the APOD archive, but Fresco makes things a little easier.
Not only do you get these great pictures, but each one comes with a description written by professional astronomers along with some other interesting facts, just as they're presented on APOD.
You can add images to your favorites, share images with friends, and search the database for any particular image. So, this isn't just an app for cool pictures to save to your homepage, but a nice little guide to some of outer space's most interesting elements.
You can download Fresco for free from the Google Play Store.
If you've got an iPhone, check out the official Astronomy Picture of the Day app, which was developed in partnership with NASA.
It's also free and gives access to the full photo/info space archive, though, it hasn't been updated for almost a year now, so there's no iPhone 5 enhancements.
There's also Astronomy Hub for you Windows Phone users out there, which I admit looks pretty sweet.