Software for astronomy

Owen-

Hi everyone - I dont normally post in this part of the forums, but I'm really REALLY in need of software that can easily make things like this:



I have photoshop (im good at it) and blender (im terrible at it) but I see this type of thing so often, I assumed there was some type of software for it - am I mistaken?

If anyone can help that would be seriously fantastic

Thanks in advance,
Owen.