Yes, you can run this.
Yes, you can run this.
You're thinking about purchasing No Man's Sky and wanting to test it with your existing setup before upgrading. With your current specs—AMD Athlon X4 845, ZOTAC Nvidia GTX 1050, 8GB DDR3 RAM—you should be able to playtest it. Just check if your system meets the game's requirements and enjoy seeing how it performs with what you have.
Give it a try. If the performance isn't to your satisfaction, you can always return it. This applies if you purchased it on Steam.